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2 LINUX ALLOCATED DEVICES (2.6+ version)
4 Maintained by Alan Cox <device@lanana.org>
6 Last revised: 6th April 2009
8 This list is the Linux Device List, the official registry of allocated
9 device numbers and /dev directory nodes for the Linux operating
10 system.
12 The latest version of this list is available from
13 http://www.lanana.org/docs/device-list/ or
14 ftp://ftp.kernel.org/pub/linux/docs/device-list/. This version may be
15 newer than the one distributed with the Linux kernel.
17 The LaTeX version of this document is no longer maintained.
19 This document is included by reference into the Filesystem Hierarchy
20 Standard (FHS). The FHS is available from http://www.pathname.com/fhs/.
22 Allocations marked (68k/Amiga) apply to Linux/68k on the Amiga
23 platform only. Allocations marked (68k/Atari) apply to Linux/68k on
24 the Atari platform only.
26 The symbol {2.6} means the allocation is obsolete and scheduled for
27 removal once kernel version 2.6 (or equivalent) is released. Some of these
28 allocations have already been removed.
30 This document is in the public domain. The author requests, however,
31 that semantically altered versions are not distributed without
32 permission of the author, assuming the author can be contacted without
33 an unreasonable effort.
35 In particular, please don't sent patches for this list to Linus, at
36 least not without contacting me first.
38 I do not have any information about these devices beyond what appears
39 on this list. Any such information requests will be deleted without
40 reply.
43 **** DEVICE DRIVERS AUTHORS PLEASE READ THIS ****
45 To have a major number allocated, or a minor number in situations
46 where that applies (e.g. busmice), please contact me with the
47 appropriate device information. Also, if you have additional
48 information regarding any of the devices listed below, or if I have
49 made a mistake, I would greatly appreciate a note.
51 I do, however, make a few requests about the nature of your report.
52 This is necessary for me to be able to keep this list up to date and
53 correct in a timely manner. First of all, *please* send it to the
54 correct address... <device@lanana.org>. I receive hundreds of email
55 messages a day, so mail sent to other addresses may very well get lost
56 in the avalanche. Please put in a descriptive subject, so I can find
57 your mail again should I need to. Too many people send me email
58 saying just "device number request" in the subject.
60 Second, please include a description of the device *in the same format
61 as this list*. The reason for this is that it is the only way I have
62 found to ensure I have all the requisite information to publish your
63 device and avoid conflicts.
65 Third, please don't assume that the distributed version of the list is
66 up to date. Due to the number of registrations I have to maintain it
67 in "batch mode", so there is likely additional registrations that
68 haven't been listed yet.
70 Fourth, remember that Linux now has extensive support for dynamic allocation
71 of device numbering and can use sysfs and udev to handle the naming needs.
72 There are still some exceptions in the serial and boot device area. Before
73 asking for a device number make sure you actually need one.
75 Finally, sometimes I have to play "namespace police." Please don't be
76 offended. I often get submissions for /dev names that would be bound
77 to cause conflicts down the road. I am trying to avoid getting in a
78 situation where we would have to suffer an incompatible forward
79 change. Therefore, please consult with me *before* you make your
80 device names and numbers in any way public, at least to the point
81 where it would be at all difficult to get them changed.
83 Your cooperation is appreciated.
86 0 Unnamed devices (e.g. non-device mounts)
87 0 = reserved as null device number
88 See block major 144, 145, 146 for expansion areas.
90 1 char Memory devices
91 1 = /dev/mem Physical memory access
92 2 = /dev/kmem Kernel virtual memory access
93 3 = /dev/null Null device
94 4 = /dev/port I/O port access
95 5 = /dev/zero Null byte source
96 6 = /dev/core OBSOLETE - replaced by /proc/kcore
97 7 = /dev/full Returns ENOSPC on write
98 8 = /dev/random Nondeterministic random number gen.
99 9 = /dev/urandom Faster, less secure random number gen.
100 10 = /dev/aio Asynchronous I/O notification interface
101 11 = /dev/kmsg Writes to this come out as printk's
102 12 = /dev/oldmem Used by crashdump kernels to access
103 the memory of the kernel that crashed.
105 1 block RAM disk
106 0 = /dev/ram0 First RAM disk
107 1 = /dev/ram1 Second RAM disk
108 ...
109 250 = /dev/initrd Initial RAM disk
111 Older kernels had /dev/ramdisk (1, 1) here.
112 /dev/initrd refers to a RAM disk which was preloaded
113 by the boot loader; newer kernels use /dev/ram0 for
114 the initrd.
116 2 char Pseudo-TTY masters
117 0 = /dev/ptyp0 First PTY master
118 1 = /dev/ptyp1 Second PTY master
119 ...
120 255 = /dev/ptyef 256th PTY master
122 Pseudo-tty's are named as follows:
123 * Masters are "pty", slaves are "tty";
124 * the fourth letter is one of pqrstuvwxyzabcde indicating
125 the 1st through 16th series of 16 pseudo-ttys each, and
126 * the fifth letter is one of 0123456789abcdef indicating
127 the position within the series.
129 These are the old-style (BSD) PTY devices; Unix98
130 devices are on major 128 and above and use the PTY
131 master multiplex (/dev/ptmx) to acquire a PTY on
132 demand.
134 2 block Floppy disks
135 0 = /dev/fd0 Controller 0, drive 0, autodetect
136 1 = /dev/fd1 Controller 0, drive 1, autodetect
137 2 = /dev/fd2 Controller 0, drive 2, autodetect
138 3 = /dev/fd3 Controller 0, drive 3, autodetect
139 128 = /dev/fd4 Controller 1, drive 0, autodetect
140 129 = /dev/fd5 Controller 1, drive 1, autodetect
141 130 = /dev/fd6 Controller 1, drive 2, autodetect
142 131 = /dev/fd7 Controller 1, drive 3, autodetect
144 To specify format, add to the autodetect device number:
145 0 = /dev/fd? Autodetect format
146 4 = /dev/fd?d360 5.25" 360K in a 360K drive(1)
147 20 = /dev/fd?h360 5.25" 360K in a 1200K drive(1)
148 48 = /dev/fd?h410 5.25" 410K in a 1200K drive
149 64 = /dev/fd?h420 5.25" 420K in a 1200K drive
150 24 = /dev/fd?h720 5.25" 720K in a 1200K drive
151 80 = /dev/fd?h880 5.25" 880K in a 1200K drive(1)
152 8 = /dev/fd?h1200 5.25" 1200K in a 1200K drive(1)
153 40 = /dev/fd?h1440 5.25" 1440K in a 1200K drive(1)
154 56 = /dev/fd?h1476 5.25" 1476K in a 1200K drive
155 72 = /dev/fd?h1494 5.25" 1494K in a 1200K drive
156 92 = /dev/fd?h1600 5.25" 1600K in a 1200K drive(1)
158 12 = /dev/fd?u360 3.5" 360K Double Density(2)
159 16 = /dev/fd?u720 3.5" 720K Double Density(1)
160 120 = /dev/fd?u800 3.5" 800K Double Density(2)
161 52 = /dev/fd?u820 3.5" 820K Double Density
162 68 = /dev/fd?u830 3.5" 830K Double Density
163 84 = /dev/fd?u1040 3.5" 1040K Double Density(1)
164 88 = /dev/fd?u1120 3.5" 1120K Double Density(1)
165 28 = /dev/fd?u1440 3.5" 1440K High Density(1)
166 124 = /dev/fd?u1600 3.5" 1600K High Density(1)
167 44 = /dev/fd?u1680 3.5" 1680K High Density(3)
168 60 = /dev/fd?u1722 3.5" 1722K High Density
169 76 = /dev/fd?u1743 3.5" 1743K High Density
170 96 = /dev/fd?u1760 3.5" 1760K High Density
171 116 = /dev/fd?u1840 3.5" 1840K High Density(3)
172 100 = /dev/fd?u1920 3.5" 1920K High Density(1)
173 32 = /dev/fd?u2880 3.5" 2880K Extra Density(1)
174 104 = /dev/fd?u3200 3.5" 3200K Extra Density
175 108 = /dev/fd?u3520 3.5" 3520K Extra Density
176 112 = /dev/fd?u3840 3.5" 3840K Extra Density(1)
178 36 = /dev/fd?CompaQ Compaq 2880K drive; obsolete?
180 (1) Autodetectable format
181 (2) Autodetectable format in a Double Density (720K) drive only
182 (3) Autodetectable format in a High Density (1440K) drive only
184 NOTE: The letter in the device name (d, q, h or u)
185 signifies the type of drive: 5.25" Double Density (d),
186 5.25" Quad Density (q), 5.25" High Density (h) or 3.5"
187 (any model, u). The use of the capital letters D, H
188 and E for the 3.5" models have been deprecated, since
189 the drive type is insignificant for these devices.
191 3 char Pseudo-TTY slaves
192 0 = /dev/ttyp0 First PTY slave
193 1 = /dev/ttyp1 Second PTY slave
194 ...
195 255 = /dev/ttyef 256th PTY slave
197 These are the old-style (BSD) PTY devices; Unix98
198 devices are on major 136 and above.
200 3 block First MFM, RLL and IDE hard disk/CD-ROM interface
201 0 = /dev/hda Master: whole disk (or CD-ROM)
202 64 = /dev/hdb Slave: whole disk (or CD-ROM)
204 For partitions, add to the whole disk device number:
205 0 = /dev/hd? Whole disk
206 1 = /dev/hd?1 First partition
207 2 = /dev/hd?2 Second partition
208 ...
209 63 = /dev/hd?63 63rd partition
211 For Linux/i386, partitions 1-4 are the primary
212 partitions, and 5 and above are logical partitions.
213 Other versions of Linux use partitioning schemes
214 appropriate to their respective architectures.
216 4 char TTY devices
217 0 = /dev/tty0 Current virtual console
219 1 = /dev/tty1 First virtual console
220 ...
221 63 = /dev/tty63 63rd virtual console
222 64 = /dev/ttyS0 First UART serial port
223 ...
224 255 = /dev/ttyS191 192nd UART serial port
226 UART serial ports refer to 8250/16450/16550 series devices.
228 Older versions of the Linux kernel used this major
229 number for BSD PTY devices. As of Linux 2.1.115, this
230 is no longer supported. Use major numbers 2 and 3.
232 4 block Aliases for dynamically allocated major devices to be used
233 when its not possible to create the real device nodes
234 because the root filesystem is mounted read-only.
236 0 = /dev/root
238 5 char Alternate TTY devices
239 0 = /dev/tty Current TTY device
240 1 = /dev/console System console
241 2 = /dev/ptmx PTY master multiplex
242 3 = /dev/ttyprintk User messages via printk TTY device
243 64 = /dev/cua0 Callout device for ttyS0
244 ...
245 255 = /dev/cua191 Callout device for ttyS191
247 (5,1) is /dev/console starting with Linux 2.1.71. See
248 the section on terminal devices for more information
249 on /dev/console.
251 6 char Parallel printer devices
252 0 = /dev/lp0 Parallel printer on parport0
253 1 = /dev/lp1 Parallel printer on parport1
254 ...
256 Current Linux kernels no longer have a fixed mapping
257 between parallel ports and I/O addresses. Instead,
258 they are redirected through the parport multiplex layer.
260 7 char Virtual console capture devices
261 0 = /dev/vcs Current vc text contents
262 1 = /dev/vcs1 tty1 text contents
263 ...
264 63 = /dev/vcs63 tty63 text contents
265 128 = /dev/vcsa Current vc text/attribute contents
266 129 = /dev/vcsa1 tty1 text/attribute contents
267 ...
268 191 = /dev/vcsa63 tty63 text/attribute contents
270 NOTE: These devices permit both read and write access.
272 7 block Loopback devices
273 0 = /dev/loop0 First loop device
274 1 = /dev/loop1 Second loop device
275 ...
277 The loop devices are used to mount filesystems not
278 associated with block devices. The binding to the
279 loop devices is handled by mount(8) or losetup(8).
281 8 block SCSI disk devices (0-15)
282 0 = /dev/sda First SCSI disk whole disk
283 16 = /dev/sdb Second SCSI disk whole disk
284 32 = /dev/sdc Third SCSI disk whole disk
285 ...
286 240 = /dev/sdp Sixteenth SCSI disk whole disk
288 Partitions are handled in the same way as for IDE
289 disks (see major number 3) except that the limit on
290 partitions is 15.
292 9 char SCSI tape devices
293 0 = /dev/st0 First SCSI tape, mode 0
294 1 = /dev/st1 Second SCSI tape, mode 0
295 ...
296 32 = /dev/st0l First SCSI tape, mode 1
297 33 = /dev/st1l Second SCSI tape, mode 1
298 ...
299 64 = /dev/st0m First SCSI tape, mode 2
300 65 = /dev/st1m Second SCSI tape, mode 2
301 ...
302 96 = /dev/st0a First SCSI tape, mode 3
303 97 = /dev/st1a Second SCSI tape, mode 3
304 ...
305 128 = /dev/nst0 First SCSI tape, mode 0, no rewind
306 129 = /dev/nst1 Second SCSI tape, mode 0, no rewind
307 ...
308 160 = /dev/nst0l First SCSI tape, mode 1, no rewind
309 161 = /dev/nst1l Second SCSI tape, mode 1, no rewind
310 ...
311 192 = /dev/nst0m First SCSI tape, mode 2, no rewind
312 193 = /dev/nst1m Second SCSI tape, mode 2, no rewind
313 ...
314 224 = /dev/nst0a First SCSI tape, mode 3, no rewind
315 225 = /dev/nst1a Second SCSI tape, mode 3, no rewind
316 ...
318 "No rewind" refers to the omission of the default
319 automatic rewind on device close. The MTREW or MTOFFL
320 ioctl()'s can be used to rewind the tape regardless of
321 the device used to access it.
323 9 block Metadisk (RAID) devices
324 0 = /dev/md0 First metadisk group
325 1 = /dev/md1 Second metadisk group
326 ...
328 The metadisk driver is used to span a
329 filesystem across multiple physical disks.
331 10 char Non-serial mice, misc features
332 0 = /dev/logibm Logitech bus mouse
333 1 = /dev/psaux PS/2-style mouse port
334 2 = /dev/inportbm Microsoft Inport bus mouse
335 3 = /dev/atibm ATI XL bus mouse
336 4 = /dev/jbm J-mouse
337 4 = /dev/amigamouse Amiga mouse (68k/Amiga)
338 5 = /dev/atarimouse Atari mouse
339 6 = /dev/sunmouse Sun mouse
340 7 = /dev/amigamouse1 Second Amiga mouse
341 8 = /dev/smouse Simple serial mouse driver
342 9 = /dev/pc110pad IBM PC-110 digitizer pad
343 10 = /dev/adbmouse Apple Desktop Bus mouse
344 11 = /dev/vrtpanel Vr41xx embedded touch panel
345 13 = /dev/vpcmouse Connectix Virtual PC Mouse
346 14 = /dev/touchscreen/ucb1x00 UCB 1x00 touchscreen
347 15 = /dev/touchscreen/mk712 MK712 touchscreen
348 128 = /dev/beep Fancy beep device
349 129 =
350 130 = /dev/watchdog Watchdog timer port
351 131 = /dev/temperature Machine internal temperature
352 132 = /dev/hwtrap Hardware fault trap
353 133 = /dev/exttrp External device trap
354 134 = /dev/apm_bios Advanced Power Management BIOS
355 135 = /dev/rtc Real Time Clock
356 139 = /dev/openprom SPARC OpenBoot PROM
357 140 = /dev/relay8 Berkshire Products Octal relay card
358 141 = /dev/relay16 Berkshire Products ISO-16 relay card
359 142 =
360 143 = /dev/pciconf PCI configuration space
361 144 = /dev/nvram Non-volatile configuration RAM
362 145 = /dev/hfmodem Soundcard shortwave modem control
363 146 = /dev/graphics Linux/SGI graphics device
364 147 = /dev/opengl Linux/SGI OpenGL pipe
365 148 = /dev/gfx Linux/SGI graphics effects device
366 149 = /dev/input/mouse Linux/SGI Irix emulation mouse
367 150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
368 151 = /dev/led Front panel LEDs
369 152 = /dev/kpoll Kernel Poll Driver
370 153 = /dev/mergemem Memory merge device
371 154 = /dev/pmu Macintosh PowerBook power manager
372 155 = /dev/isictl MultiTech ISICom serial control
373 156 = /dev/lcd Front panel LCD display
374 157 = /dev/ac Applicom Intl Profibus card
375 158 = /dev/nwbutton Netwinder external button
376 159 = /dev/nwdebug Netwinder debug interface
377 160 = /dev/nwflash Netwinder flash memory
378 161 = /dev/userdma User-space DMA access
379 162 = /dev/smbus System Management Bus
380 163 = /dev/lik Logitech Internet Keyboard
381 164 = /dev/ipmo Intel Intelligent Platform Management
382 165 = /dev/vmmon VMware virtual machine monitor
383 166 = /dev/i2o/ctl I2O configuration manager
384 167 = /dev/specialix_sxctl Specialix serial control
385 168 = /dev/tcldrv Technology Concepts serial control
386 169 = /dev/specialix_rioctl Specialix RIO serial control
387 170 = /dev/thinkpad/thinkpad IBM Thinkpad devices
388 171 = /dev/srripc QNX4 API IPC manager
389 172 = /dev/usemaclone Semaphore clone device
390 173 = /dev/ipmikcs Intelligent Platform Management
391 174 = /dev/uctrl SPARCbook 3 microcontroller
392 175 = /dev/agpgart AGP Graphics Address Remapping Table
393 176 = /dev/gtrsc Gorgy Timing radio clock
394 177 = /dev/cbm Serial CBM bus
395 178 = /dev/jsflash JavaStation OS flash SIMM
396 179 = /dev/xsvc High-speed shared-mem/semaphore service
397 180 = /dev/vrbuttons Vr41xx button input device
398 181 = /dev/toshiba Toshiba laptop SMM support
399 182 = /dev/perfctr Performance-monitoring counters
400 183 = /dev/hwrng Generic random number generator
401 184 = /dev/cpu/microcode CPU microcode update interface
402 186 = /dev/atomicps Atomic shapshot of process state data
403 187 = /dev/irnet IrNET device
404 188 = /dev/smbusbios SMBus BIOS
405 189 = /dev/ussp_ctl User space serial port control
406 190 = /dev/crash Mission Critical Linux crash dump facility
407 191 = /dev/pcl181 <information missing>
408 192 = /dev/nas_xbus NAS xbus LCD/buttons access
409 193 = /dev/d7s SPARC 7-segment display
410 194 = /dev/zkshim Zero-Knowledge network shim control
411 195 = /dev/elographics/e2201 Elographics touchscreen E271-2201
412 198 = /dev/sexec Signed executable interface
413 199 = /dev/scanners/cuecat :CueCat barcode scanner
414 200 = /dev/net/tun TAP/TUN network device
415 201 = /dev/button/gulpb Transmeta GULP-B buttons
416 202 = /dev/emd/ctl Enhanced Metadisk RAID (EMD) control
417 204 = /dev/video/em8300 EM8300 DVD decoder control
418 205 = /dev/video/em8300_mv EM8300 DVD decoder video
419 206 = /dev/video/em8300_ma EM8300 DVD decoder audio
420 207 = /dev/video/em8300_sp EM8300 DVD decoder subpicture
421 208 = /dev/compaq/cpqphpc Compaq PCI Hot Plug Controller
422 209 = /dev/compaq/cpqrid Compaq Remote Insight Driver
423 210 = /dev/impi/bt IMPI coprocessor block transfer
424 211 = /dev/impi/smic IMPI coprocessor stream interface
425 212 = /dev/watchdogs/0 First watchdog device
426 213 = /dev/watchdogs/1 Second watchdog device
427 214 = /dev/watchdogs/2 Third watchdog device
428 215 = /dev/watchdogs/3 Fourth watchdog device
429 216 = /dev/fujitsu/apanel Fujitsu/Siemens application panel
430 217 = /dev/ni/natmotn National Instruments Motion
431 218 = /dev/kchuid Inter-process chuid control
432 219 = /dev/modems/mwave MWave modem firmware upload
433 220 = /dev/mptctl Message passing technology (MPT) control
434 221 = /dev/mvista/hssdsi Montavista PICMG hot swap system driver
435 222 = /dev/mvista/hasi Montavista PICMG high availability
436 223 = /dev/input/uinput User level driver support for input
437 224 = /dev/tpm TCPA TPM driver
438 225 = /dev/pps Pulse Per Second driver
439 226 = /dev/systrace Systrace device
440 227 = /dev/mcelog X86_64 Machine Check Exception driver
441 228 = /dev/hpet HPET driver
442 229 = /dev/fuse Fuse (virtual filesystem in user-space)
443 230 = /dev/midishare MidiShare driver
444 231 = /dev/snapshot System memory snapshot device
445 232 = /dev/kvm Kernel-based virtual machine (hardware virtualization extensions)
446 233 = /dev/kmview View-OS A process with a view
447 234 = /dev/btrfs-control Btrfs control device
448 235 = /dev/autofs Autofs control device
449 236 = /dev/mapper/control Device-Mapper control device
450 237 = /dev/loop-control Loopback control device
451 238 = /dev/vhost-net Host kernel accelerator for virtio net
453 240-254 Reserved for local use
454 255 Reserved for MISC_DYNAMIC_MINOR
456 11 char Raw keyboard device (Linux/SPARC only)
457 0 = /dev/kbd Raw keyboard device
459 11 char Serial Mux device (Linux/PA-RISC only)
460 0 = /dev/ttyB0 First mux port
461 1 = /dev/ttyB1 Second mux port
462 ...
464 11 block SCSI CD-ROM devices
465 0 = /dev/scd0 First SCSI CD-ROM
466 1 = /dev/scd1 Second SCSI CD-ROM
467 ...
469 The prefix /dev/sr (instead of /dev/scd) has been deprecated.
471 12 char QIC-02 tape
472 2 = /dev/ntpqic11 QIC-11, no rewind-on-close
473 3 = /dev/tpqic11 QIC-11, rewind-on-close
474 4 = /dev/ntpqic24 QIC-24, no rewind-on-close
475 5 = /dev/tpqic24 QIC-24, rewind-on-close
476 6 = /dev/ntpqic120 QIC-120, no rewind-on-close
477 7 = /dev/tpqic120 QIC-120, rewind-on-close
478 8 = /dev/ntpqic150 QIC-150, no rewind-on-close
479 9 = /dev/tpqic150 QIC-150, rewind-on-close
481 The device names specified are proposed -- if there
482 are "standard" names for these devices, please let me know.
484 12 block
486 13 char Input core
487 0 = /dev/input/js0 First joystick
488 1 = /dev/input/js1 Second joystick
489 ...
490 32 = /dev/input/mouse0 First mouse
491 33 = /dev/input/mouse1 Second mouse
492 ...
493 63 = /dev/input/mice Unified mouse
494 64 = /dev/input/event0 First event queue
495 65 = /dev/input/event1 Second event queue
496 ...
498 Each device type has 5 bits (32 minors).
500 13 block 8-bit MFM/RLL/IDE controller
501 0 = /dev/xda First XT disk whole disk
502 64 = /dev/xdb Second XT disk whole disk
504 Partitions are handled in the same way as IDE disks
505 (see major number 3).
507 14 char Open Sound System (OSS)
508 0 = /dev/mixer Mixer control
509 1 = /dev/sequencer Audio sequencer
510 2 = /dev/midi00 First MIDI port
511 3 = /dev/dsp Digital audio
512 4 = /dev/audio Sun-compatible digital audio
513 6 =
514 7 = /dev/audioctl SPARC audio control device
515 8 = /dev/sequencer2 Sequencer -- alternate device
516 16 = /dev/mixer1 Second soundcard mixer control
517 17 = /dev/patmgr0 Sequencer patch manager
518 18 = /dev/midi01 Second MIDI port
519 19 = /dev/dsp1 Second soundcard digital audio
520 20 = /dev/audio1 Second soundcard Sun digital audio
521 33 = /dev/patmgr1 Sequencer patch manager
522 34 = /dev/midi02 Third MIDI port
523 50 = /dev/midi03 Fourth MIDI port
525 14 block
527 15 char Joystick
528 0 = /dev/js0 First analog joystick
529 1 = /dev/js1 Second analog joystick
530 ...
531 128 = /dev/djs0 First digital joystick
532 129 = /dev/djs1 Second digital joystick
533 ...
534 15 block Sony CDU-31A/CDU-33A CD-ROM
535 0 = /dev/sonycd Sony CDU-31a CD-ROM
537 16 char Non-SCSI scanners
538 0 = /dev/gs4500 Genius 4500 handheld scanner
540 16 block GoldStar CD-ROM
541 0 = /dev/gscd GoldStar CD-ROM
543 17 char OBSOLETE (was Chase serial card)
544 0 = /dev/ttyH0 First Chase port
545 1 = /dev/ttyH1 Second Chase port
546 ...
547 17 block Optics Storage CD-ROM
548 0 = /dev/optcd Optics Storage CD-ROM
550 18 char OBSOLETE (was Chase serial card - alternate devices)
551 0 = /dev/cuh0 Callout device for ttyH0
552 1 = /dev/cuh1 Callout device for ttyH1
553 ...
554 18 block Sanyo CD-ROM
555 0 = /dev/sjcd Sanyo CD-ROM
557 19 char Cyclades serial card
558 0 = /dev/ttyC0 First Cyclades port
559 ...
560 31 = /dev/ttyC31 32nd Cyclades port
562 19 block "Double" compressed disk
563 0 = /dev/double0 First compressed disk
564 ...
565 7 = /dev/double7 Eighth compressed disk
566 128 = /dev/cdouble0 Mirror of first compressed disk
567 ...
568 135 = /dev/cdouble7 Mirror of eighth compressed disk
570 See the Double documentation for the meaning of the
571 mirror devices.
573 20 char Cyclades serial card - alternate devices
574 0 = /dev/cub0 Callout device for ttyC0
575 ...
576 31 = /dev/cub31 Callout device for ttyC31
578 20 block Hitachi CD-ROM (under development)
579 0 = /dev/hitcd Hitachi CD-ROM
581 21 char Generic SCSI access
582 0 = /dev/sg0 First generic SCSI device
583 1 = /dev/sg1 Second generic SCSI device
584 ...
586 Most distributions name these /dev/sga, /dev/sgb...;
587 this sets an unnecessary limit of 26 SCSI devices in
588 the system and is counter to standard Linux
589 device-naming practice.
591 21 block Acorn MFM hard drive interface
592 0 = /dev/mfma First MFM drive whole disk
593 64 = /dev/mfmb Second MFM drive whole disk
595 This device is used on the ARM-based Acorn RiscPC.
596 Partitions are handled the same way as for IDE disks
597 (see major number 3).
599 22 char Digiboard serial card
600 0 = /dev/ttyD0 First Digiboard port
601 1 = /dev/ttyD1 Second Digiboard port
602 ...
603 22 block Second IDE hard disk/CD-ROM interface
604 0 = /dev/hdc Master: whole disk (or CD-ROM)
605 64 = /dev/hdd Slave: whole disk (or CD-ROM)
607 Partitions are handled the same way as for the first
608 interface (see major number 3).
610 23 char Digiboard serial card - alternate devices
611 0 = /dev/cud0 Callout device for ttyD0
612 1 = /dev/cud1 Callout device for ttyD1
613 ...
614 23 block Mitsumi proprietary CD-ROM
615 0 = /dev/mcd Mitsumi CD-ROM
617 24 char Stallion serial card
618 0 = /dev/ttyE0 Stallion port 0 card 0
619 1 = /dev/ttyE1 Stallion port 1 card 0
620 ...
621 64 = /dev/ttyE64 Stallion port 0 card 1
622 65 = /dev/ttyE65 Stallion port 1 card 1
623 ...
624 128 = /dev/ttyE128 Stallion port 0 card 2
625 129 = /dev/ttyE129 Stallion port 1 card 2
626 ...
627 192 = /dev/ttyE192 Stallion port 0 card 3
628 193 = /dev/ttyE193 Stallion port 1 card 3
629 ...
630 24 block Sony CDU-535 CD-ROM
631 0 = /dev/cdu535 Sony CDU-535 CD-ROM
633 25 char Stallion serial card - alternate devices
634 0 = /dev/cue0 Callout device for ttyE0
635 1 = /dev/cue1 Callout device for ttyE1
636 ...
637 64 = /dev/cue64 Callout device for ttyE64
638 65 = /dev/cue65 Callout device for ttyE65
639 ...
640 128 = /dev/cue128 Callout device for ttyE128
641 129 = /dev/cue129 Callout device for ttyE129
642 ...
643 192 = /dev/cue192 Callout device for ttyE192
644 193 = /dev/cue193 Callout device for ttyE193
645 ...
646 25 block First Matsushita (Panasonic/SoundBlaster) CD-ROM
647 0 = /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0
648 1 = /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1
649 2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
650 3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
652 26 char
654 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
655 0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
656 1 = /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1
657 2 = /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2
658 3 = /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3
660 27 char QIC-117 tape
661 0 = /dev/qft0 Unit 0, rewind-on-close
662 1 = /dev/qft1 Unit 1, rewind-on-close
663 2 = /dev/qft2 Unit 2, rewind-on-close
664 3 = /dev/qft3 Unit 3, rewind-on-close
665 4 = /dev/nqft0 Unit 0, no rewind-on-close
666 5 = /dev/nqft1 Unit 1, no rewind-on-close
667 6 = /dev/nqft2 Unit 2, no rewind-on-close
668 7 = /dev/nqft3 Unit 3, no rewind-on-close
669 16 = /dev/zqft0 Unit 0, rewind-on-close, compression
670 17 = /dev/zqft1 Unit 1, rewind-on-close, compression
671 18 = /dev/zqft2 Unit 2, rewind-on-close, compression
672 19 = /dev/zqft3 Unit 3, rewind-on-close, compression
673 20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression
674 21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression
675 22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression
676 23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression
677 32 = /dev/rawqft0 Unit 0, rewind-on-close, no file marks
678 33 = /dev/rawqft1 Unit 1, rewind-on-close, no file marks
679 34 = /dev/rawqft2 Unit 2, rewind-on-close, no file marks
680 35 = /dev/rawqft3 Unit 3, rewind-on-close, no file marks
681 36 = /dev/nrawqft0 Unit 0, no rewind-on-close, no file marks
682 37 = /dev/nrawqft1 Unit 1, no rewind-on-close, no file marks
683 38 = /dev/nrawqft2 Unit 2, no rewind-on-close, no file marks
684 39 = /dev/nrawqft3 Unit 3, no rewind-on-close, no file marks
686 27 block Third Matsushita (Panasonic/SoundBlaster) CD-ROM
687 0 = /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0
688 1 = /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1
689 2 = /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2
690 3 = /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3
692 28 char Stallion serial card - card programming
693 0 = /dev/staliomem0 First Stallion card I/O memory
694 1 = /dev/staliomem1 Second Stallion card I/O memory
695 2 = /dev/staliomem2 Third Stallion card I/O memory
696 3 = /dev/staliomem3 Fourth Stallion card I/O memory
698 28 char Atari SLM ACSI laser printer (68k/Atari)
699 0 = /dev/slm0 First SLM laser printer
700 1 = /dev/slm1 Second SLM laser printer
701 ...
702 28 block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
703 0 = /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0
704 1 = /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1
705 2 = /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2
706 3 = /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3
708 28 block ACSI disk (68k/Atari)
709 0 = /dev/ada First ACSI disk whole disk
710 16 = /dev/adb Second ACSI disk whole disk
711 32 = /dev/adc Third ACSI disk whole disk
712 ...
713 240 = /dev/adp 16th ACSI disk whole disk
715 Partitions are handled in the same way as for IDE
716 disks (see major number 3) except that the limit on
717 partitions is 15, like SCSI.
719 29 char Universal frame buffer
720 0 = /dev/fb0 First frame buffer
721 1 = /dev/fb1 Second frame buffer
722 ...
723 31 = /dev/fb31 32nd frame buffer
725 29 block Aztech/Orchid/Okano/Wearnes CD-ROM
726 0 = /dev/aztcd Aztech CD-ROM
728 30 char iBCS-2 compatibility devices
729 0 = /dev/socksys Socket access
730 1 = /dev/spx SVR3 local X interface
731 32 = /dev/inet/ip Network access
732 33 = /dev/inet/icmp
733 34 = /dev/inet/ggp
734 35 = /dev/inet/ipip
735 36 = /dev/inet/tcp
736 37 = /dev/inet/egp
737 38 = /dev/inet/pup
738 39 = /dev/inet/udp
739 40 = /dev/inet/idp
740 41 = /dev/inet/rawip
742 Additionally, iBCS-2 requires the following links:
744 /dev/ip -> /dev/inet/ip
745 /dev/icmp -> /dev/inet/icmp
746 /dev/ggp -> /dev/inet/ggp
747 /dev/ipip -> /dev/inet/ipip
748 /dev/tcp -> /dev/inet/tcp
749 /dev/egp -> /dev/inet/egp
750 /dev/pup -> /dev/inet/pup
751 /dev/udp -> /dev/inet/udp
752 /dev/idp -> /dev/inet/idp
753 /dev/rawip -> /dev/inet/rawip
754 /dev/inet/arp -> /dev/inet/udp
755 /dev/inet/rip -> /dev/inet/udp
756 /dev/nfsd -> /dev/socksys
757 /dev/X0R -> /dev/null (? apparently not required ?)
759 30 block Philips LMS CM-205 CD-ROM
760 0 = /dev/cm205cd Philips LMS CM-205 CD-ROM
762 /dev/lmscd is an older name for this device. This
763 driver does not work with the CM-205MS CD-ROM.
765 31 char MPU-401 MIDI
766 0 = /dev/mpu401data MPU-401 data port
767 1 = /dev/mpu401stat MPU-401 status port
769 31 block ROM/flash memory card
770 0 = /dev/rom0 First ROM card (rw)
771 ...
772 7 = /dev/rom7 Eighth ROM card (rw)
773 8 = /dev/rrom0 First ROM card (ro)
774 ...
775 15 = /dev/rrom7 Eighth ROM card (ro)
776 16 = /dev/flash0 First flash memory card (rw)
777 ...
778 23 = /dev/flash7 Eighth flash memory card (rw)
779 24 = /dev/rflash0 First flash memory card (ro)
780 ...
781 31 = /dev/rflash7 Eighth flash memory card (ro)
783 The read-write (rw) devices support back-caching
784 written data in RAM, as well as writing to flash RAM
785 devices. The read-only devices (ro) support reading
786 only.
788 32 char Specialix serial card
789 0 = /dev/ttyX0 First Specialix port
790 1 = /dev/ttyX1 Second Specialix port
791 ...
792 32 block Philips LMS CM-206 CD-ROM
793 0 = /dev/cm206cd Philips LMS CM-206 CD-ROM
795 33 char Specialix serial card - alternate devices
796 0 = /dev/cux0 Callout device for ttyX0
797 1 = /dev/cux1 Callout device for ttyX1
798 ...
799 33 block Third IDE hard disk/CD-ROM interface
800 0 = /dev/hde Master: whole disk (or CD-ROM)
801 64 = /dev/hdf Slave: whole disk (or CD-ROM)
803 Partitions are handled the same way as for the first
804 interface (see major number 3).
806 34 char Z8530 HDLC driver
807 0 = /dev/scc0 First Z8530, first port
808 1 = /dev/scc1 First Z8530, second port
809 2 = /dev/scc2 Second Z8530, first port
810 3 = /dev/scc3 Second Z8530, second port
811 ...
813 In a previous version these devices were named
814 /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
815 on.
817 34 block Fourth IDE hard disk/CD-ROM interface
818 0 = /dev/hdg Master: whole disk (or CD-ROM)
819 64 = /dev/hdh Slave: whole disk (or CD-ROM)
821 Partitions are handled the same way as for the first
822 interface (see major number 3).
824 35 char tclmidi MIDI driver
825 0 = /dev/midi0 First MIDI port, kernel timed
826 1 = /dev/midi1 Second MIDI port, kernel timed
827 2 = /dev/midi2 Third MIDI port, kernel timed
828 3 = /dev/midi3 Fourth MIDI port, kernel timed
829 64 = /dev/rmidi0 First MIDI port, untimed
830 65 = /dev/rmidi1 Second MIDI port, untimed
831 66 = /dev/rmidi2 Third MIDI port, untimed
832 67 = /dev/rmidi3 Fourth MIDI port, untimed
833 128 = /dev/smpte0 First MIDI port, SMPTE timed
834 129 = /dev/smpte1 Second MIDI port, SMPTE timed
835 130 = /dev/smpte2 Third MIDI port, SMPTE timed
836 131 = /dev/smpte3 Fourth MIDI port, SMPTE timed
838 35 block Slow memory ramdisk
839 0 = /dev/slram Slow memory ramdisk
841 36 char Netlink support
842 0 = /dev/route Routing, device updates, kernel to user
843 1 = /dev/skip enSKIP security cache control
844 3 = /dev/fwmonitor Firewall packet copies
845 16 = /dev/tap0 First Ethertap device
846 ...
847 31 = /dev/tap15 16th Ethertap device
849 36 block MCA ESDI hard disk
850 0 = /dev/eda First ESDI disk whole disk
851 64 = /dev/edb Second ESDI disk whole disk
852 ...
854 Partitions are handled in the same way as IDE disks
855 (see major number 3).
857 37 char IDE tape
858 0 = /dev/ht0 First IDE tape
859 1 = /dev/ht1 Second IDE tape
860 ...
861 128 = /dev/nht0 First IDE tape, no rewind-on-close
862 129 = /dev/nht1 Second IDE tape, no rewind-on-close
863 ...
865 Currently, only one IDE tape drive is supported.
867 37 block Zorro II ramdisk
868 0 = /dev/z2ram Zorro II ramdisk
870 38 char Myricom PCI Myrinet board
871 0 = /dev/mlanai0 First Myrinet board
872 1 = /dev/mlanai1 Second Myrinet board
873 ...
875 This device is used for status query, board control
876 and "user level packet I/O." This board is also
877 accessible as a standard networking "eth" device.
879 38 block OBSOLETE (was Linux/AP+)
881 39 char ML-16P experimental I/O board
882 0 = /dev/ml16pa-a0 First card, first analog channel
883 1 = /dev/ml16pa-a1 First card, second analog channel
884 ...
885 15 = /dev/ml16pa-a15 First card, 16th analog channel
886 16 = /dev/ml16pa-d First card, digital lines
887 17 = /dev/ml16pa-c0 First card, first counter/timer
888 18 = /dev/ml16pa-c1 First card, second counter/timer
889 19 = /dev/ml16pa-c2 First card, third counter/timer
890 32 = /dev/ml16pb-a0 Second card, first analog channel
891 33 = /dev/ml16pb-a1 Second card, second analog channel
892 ...
893 47 = /dev/ml16pb-a15 Second card, 16th analog channel
894 48 = /dev/ml16pb-d Second card, digital lines
895 49 = /dev/ml16pb-c0 Second card, first counter/timer
896 50 = /dev/ml16pb-c1 Second card, second counter/timer
897 51 = /dev/ml16pb-c2 Second card, third counter/timer
898 ...
899 39 block
901 40 char
903 40 block
905 41 char Yet Another Micro Monitor
906 0 = /dev/yamm Yet Another Micro Monitor
908 41 block
910 42 char Demo/sample use
912 42 block Demo/sample use
914 This number is intended for use in sample code, as
915 well as a general "example" device number. It
916 should never be used for a device driver that is being
917 distributed; either obtain an official number or use
918 the local/experimental range. The sudden addition or
919 removal of a driver with this number should not cause
920 ill effects to the system (bugs excepted.)
922 IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
923 DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
925 43 char isdn4linux virtual modem
926 0 = /dev/ttyI0 First virtual modem
927 ...
928 63 = /dev/ttyI63 64th virtual modem
930 43 block Network block devices
931 0 = /dev/nb0 First network block device
932 1 = /dev/nb1 Second network block device
933 ...
935 Network Block Device is somehow similar to loopback
936 devices: If you read from it, it sends packet across
937 network asking server for data. If you write to it, it
938 sends packet telling server to write. It could be used
939 to mounting filesystems over the net, swapping over
940 the net, implementing block device in userland etc.
942 44 char isdn4linux virtual modem - alternate devices
943 0 = /dev/cui0 Callout device for ttyI0
944 ...
945 63 = /dev/cui63 Callout device for ttyI63
947 44 block Flash Translation Layer (FTL) filesystems
948 0 = /dev/ftla FTL on first Memory Technology Device
949 16 = /dev/ftlb FTL on second Memory Technology Device
950 32 = /dev/ftlc FTL on third Memory Technology Device
951 ...
952 240 = /dev/ftlp FTL on 16th Memory Technology Device
954 Partitions are handled in the same way as for IDE
955 disks (see major number 3) except that the partition
956 limit is 15 rather than 63 per disk (same as SCSI.)
958 45 char isdn4linux ISDN BRI driver
959 0 = /dev/isdn0 First virtual B channel raw data
960 ...
961 63 = /dev/isdn63 64th virtual B channel raw data
962 64 = /dev/isdnctrl0 First channel control/debug
963 ...
964 127 = /dev/isdnctrl63 64th channel control/debug
966 128 = /dev/ippp0 First SyncPPP device
967 ...
968 191 = /dev/ippp63 64th SyncPPP device
970 255 = /dev/isdninfo ISDN monitor interface
972 45 block Parallel port IDE disk devices
973 0 = /dev/pda First parallel port IDE disk
974 16 = /dev/pdb Second parallel port IDE disk
975 32 = /dev/pdc Third parallel port IDE disk
976 48 = /dev/pdd Fourth parallel port IDE disk
978 Partitions are handled in the same way as for IDE
979 disks (see major number 3) except that the partition
980 limit is 15 rather than 63 per disk.
982 46 char Comtrol Rocketport serial card
983 0 = /dev/ttyR0 First Rocketport port
984 1 = /dev/ttyR1 Second Rocketport port
985 ...
986 46 block Parallel port ATAPI CD-ROM devices
987 0 = /dev/pcd0 First parallel port ATAPI CD-ROM
988 1 = /dev/pcd1 Second parallel port ATAPI CD-ROM
989 2 = /dev/pcd2 Third parallel port ATAPI CD-ROM
990 3 = /dev/pcd3 Fourth parallel port ATAPI CD-ROM
992 47 char Comtrol Rocketport serial card - alternate devices
993 0 = /dev/cur0 Callout device for ttyR0
994 1 = /dev/cur1 Callout device for ttyR1
995 ...
996 47 block Parallel port ATAPI disk devices
997 0 = /dev/pf0 First parallel port ATAPI disk
998 1 = /dev/pf1 Second parallel port ATAPI disk
999 2 = /dev/pf2 Third parallel port ATAPI disk
1000 3 = /dev/pf3 Fourth parallel port ATAPI disk
1002 This driver is intended for floppy disks and similar
1003 devices and hence does not support partitioning.
1005 48 char SDL RISCom serial card
1006 0 = /dev/ttyL0 First RISCom port
1007 1 = /dev/ttyL1 Second RISCom port
1008 ...
1009 48 block Mylex DAC960 PCI RAID controller; first controller
1010 0 = /dev/rd/c0d0 First disk, whole disk
1011 8 = /dev/rd/c0d1 Second disk, whole disk
1012 ...
1013 248 = /dev/rd/c0d31 32nd disk, whole disk
1015 For partitions add:
1016 0 = /dev/rd/c?d? Whole disk
1017 1 = /dev/rd/c?d?p1 First partition
1018 ...
1019 7 = /dev/rd/c?d?p7 Seventh partition
1021 49 char SDL RISCom serial card - alternate devices
1022 0 = /dev/cul0 Callout device for ttyL0
1023 1 = /dev/cul1 Callout device for ttyL1
1024 ...
1025 49 block Mylex DAC960 PCI RAID controller; second controller
1026 0 = /dev/rd/c1d0 First disk, whole disk
1027 8 = /dev/rd/c1d1 Second disk, whole disk
1028 ...
1029 248 = /dev/rd/c1d31 32nd disk, whole disk
1031 Partitions are handled as for major 48.
1033 50 char Reserved for GLINT
1035 50 block Mylex DAC960 PCI RAID controller; third controller
1036 0 = /dev/rd/c2d0 First disk, whole disk
1037 8 = /dev/rd/c2d1 Second disk, whole disk
1038 ...
1039 248 = /dev/rd/c2d31 32nd disk, whole disk
1041 51 char Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
1042 0 = /dev/bc0 First Baycom radio modem
1043 1 = /dev/bc1 Second Baycom radio modem
1044 ...
1045 51 block Mylex DAC960 PCI RAID controller; fourth controller
1046 0 = /dev/rd/c3d0 First disk, whole disk
1047 8 = /dev/rd/c3d1 Second disk, whole disk
1048 ...
1049 248 = /dev/rd/c3d31 32nd disk, whole disk
1051 Partitions are handled as for major 48.
1053 52 char Spellcaster DataComm/BRI ISDN card
1054 0 = /dev/dcbri0 First DataComm card
1055 1 = /dev/dcbri1 Second DataComm card
1056 2 = /dev/dcbri2 Third DataComm card
1057 3 = /dev/dcbri3 Fourth DataComm card
1059 52 block Mylex DAC960 PCI RAID controller; fifth controller
1060 0 = /dev/rd/c4d0 First disk, whole disk
1061 8 = /dev/rd/c4d1 Second disk, whole disk
1062 ...
1063 248 = /dev/rd/c4d31 32nd disk, whole disk
1065 Partitions are handled as for major 48.
1067 53 char BDM interface for remote debugging MC683xx microcontrollers
1068 0 = /dev/pd_bdm0 PD BDM interface on lp0
1069 1 = /dev/pd_bdm1 PD BDM interface on lp1
1070 2 = /dev/pd_bdm2 PD BDM interface on lp2
1071 4 = /dev/icd_bdm0 ICD BDM interface on lp0
1072 5 = /dev/icd_bdm1 ICD BDM interface on lp1
1073 6 = /dev/icd_bdm2 ICD BDM interface on lp2
1075 This device is used for the interfacing to the MC683xx
1076 microcontrollers via Background Debug Mode by use of a
1077 Parallel Port interface. PD is the Motorola Public
1078 Domain Interface and ICD is the commercial interface
1079 by P&E.
1081 53 block Mylex DAC960 PCI RAID controller; sixth controller
1082 0 = /dev/rd/c5d0 First disk, whole disk
1083 8 = /dev/rd/c5d1 Second disk, whole disk
1084 ...
1085 248 = /dev/rd/c5d31 32nd disk, whole disk
1087 Partitions are handled as for major 48.
1089 54 char Electrocardiognosis Holter serial card
1090 0 = /dev/holter0 First Holter port
1091 1 = /dev/holter1 Second Holter port
1092 2 = /dev/holter2 Third Holter port
1094 A custom serial card used by Electrocardiognosis SRL
1095 <mseritan@ottonel.pub.ro> to transfer data from Holter
1096 24-hour heart monitoring equipment.
1098 54 block Mylex DAC960 PCI RAID controller; seventh controller
1099 0 = /dev/rd/c6d0 First disk, whole disk
1100 8 = /dev/rd/c6d1 Second disk, whole disk
1101 ...
1102 248 = /dev/rd/c6d31 32nd disk, whole disk
1104 Partitions are handled as for major 48.
1106 55 char DSP56001 digital signal processor
1107 0 = /dev/dsp56k First DSP56001
1109 55 block Mylex DAC960 PCI RAID controller; eighth controller
1110 0 = /dev/rd/c7d0 First disk, whole disk
1111 8 = /dev/rd/c7d1 Second disk, whole disk
1112 ...
1113 248 = /dev/rd/c7d31 32nd disk, whole disk
1115 Partitions are handled as for major 48.
1117 56 char Apple Desktop Bus
1118 0 = /dev/adb ADB bus control
1120 Additional devices will be added to this number, all
1121 starting with /dev/adb.
1123 56 block Fifth IDE hard disk/CD-ROM interface
1124 0 = /dev/hdi Master: whole disk (or CD-ROM)
1125 64 = /dev/hdj Slave: whole disk (or CD-ROM)
1127 Partitions are handled the same way as for the first
1128 interface (see major number 3).
1130 57 char Hayes ESP serial card
1131 0 = /dev/ttyP0 First ESP port
1132 1 = /dev/ttyP1 Second ESP port
1133 ...
1135 57 block Sixth IDE hard disk/CD-ROM interface
1136 0 = /dev/hdk Master: whole disk (or CD-ROM)
1137 64 = /dev/hdl Slave: whole disk (or CD-ROM)
1139 Partitions are handled the same way as for the first
1140 interface (see major number 3).
1142 58 char Hayes ESP serial card - alternate devices
1143 0 = /dev/cup0 Callout device for ttyP0
1144 1 = /dev/cup1 Callout device for ttyP1
1145 ...
1147 58 block Reserved for logical volume manager
1149 59 char sf firewall package
1150 0 = /dev/firewall Communication with sf kernel module
1152 59 block Generic PDA filesystem device
1153 0 = /dev/pda0 First PDA device
1154 1 = /dev/pda1 Second PDA device
1155 ...
1157 The pda devices are used to mount filesystems on
1158 remote pda's (basically slow handheld machines with
1159 proprietary OS's and limited memory and storage
1160 running small fs translation drivers) through serial /
1161 IRDA / parallel links.
1163 NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1165 60-63 char LOCAL/EXPERIMENTAL USE
1167 60-63 block LOCAL/EXPERIMENTAL USE
1168 Allocated for local/experimental use. For devices not
1169 assigned official numbers, these ranges should be
1170 used in order to avoid conflicting with future assignments.
1172 64 char ENskip kernel encryption package
1173 0 = /dev/enskip Communication with ENskip kernel module
1175 64 block Scramdisk/DriveCrypt encrypted devices
1176 0 = /dev/scramdisk/master Master node for ioctls
1177 1 = /dev/scramdisk/1 First encrypted device
1178 2 = /dev/scramdisk/2 Second encrypted device
1179 ...
1180 255 = /dev/scramdisk/255 255th encrypted device
1182 The filename of the encrypted container and the passwords
1183 are sent via ioctls (using the sdmount tool) to the master
1184 node which then activates them via one of the
1185 /dev/scramdisk/x nodes for loop mounting (all handled
1186 through the sdmount tool).
1188 Requested by: andy@scramdisklinux.org
1190 65 char Sundance "plink" Transputer boards (obsolete, unused)
1191 0 = /dev/plink0 First plink device
1192 1 = /dev/plink1 Second plink device
1193 2 = /dev/plink2 Third plink device
1194 3 = /dev/plink3 Fourth plink device
1195 64 = /dev/rplink0 First plink device, raw
1196 65 = /dev/rplink1 Second plink device, raw
1197 66 = /dev/rplink2 Third plink device, raw
1198 67 = /dev/rplink3 Fourth plink device, raw
1199 128 = /dev/plink0d First plink device, debug
1200 129 = /dev/plink1d Second plink device, debug
1201 130 = /dev/plink2d Third plink device, debug
1202 131 = /dev/plink3d Fourth plink device, debug
1203 192 = /dev/rplink0d First plink device, raw, debug
1204 193 = /dev/rplink1d Second plink device, raw, debug
1205 194 = /dev/rplink2d Third plink device, raw, debug
1206 195 = /dev/rplink3d Fourth plink device, raw, debug
1208 This is a commercial driver; contact James Howes
1209 <jth@prosig.demon.co.uk> for information.
1211 65 block SCSI disk devices (16-31)
1212 0 = /dev/sdq 17th SCSI disk whole disk
1213 16 = /dev/sdr 18th SCSI disk whole disk
1214 32 = /dev/sds 19th SCSI disk whole disk
1215 ...
1216 240 = /dev/sdaf 32nd SCSI disk whole disk
1218 Partitions are handled in the same way as for IDE
1219 disks (see major number 3) except that the limit on
1220 partitions is 15.
1222 66 char YARC PowerPC PCI coprocessor card
1223 0 = /dev/yppcpci0 First YARC card
1224 1 = /dev/yppcpci1 Second YARC card
1225 ...
1227 66 block SCSI disk devices (32-47)
1228 0 = /dev/sdag 33th SCSI disk whole disk
1229 16 = /dev/sdah 34th SCSI disk whole disk
1230 32 = /dev/sdai 35th SCSI disk whole disk
1231 ...
1232 240 = /dev/sdav 48nd SCSI disk whole disk
1234 Partitions are handled in the same way as for IDE
1235 disks (see major number 3) except that the limit on
1236 partitions is 15.
1238 67 char Coda network file system
1239 0 = /dev/cfs0 Coda cache manager
1241 See http://www.coda.cs.cmu.edu for information about Coda.
1243 67 block SCSI disk devices (48-63)
1244 0 = /dev/sdaw 49th SCSI disk whole disk
1245 16 = /dev/sdax 50th SCSI disk whole disk
1246 32 = /dev/sday 51st SCSI disk whole disk
1247 ...
1248 240 = /dev/sdbl 64th SCSI disk whole disk
1250 Partitions are handled in the same way as for IDE
1251 disks (see major number 3) except that the limit on
1252 partitions is 15.
1254 68 char CAPI 2.0 interface
1255 0 = /dev/capi20 Control device
1256 1 = /dev/capi20.00 First CAPI 2.0 application
1257 2 = /dev/capi20.01 Second CAPI 2.0 application
1258 ...
1259 20 = /dev/capi20.19 19th CAPI 2.0 application
1261 ISDN CAPI 2.0 driver for use with CAPI 2.0
1262 applications; currently supports the AVM B1 card.
1264 68 block SCSI disk devices (64-79)
1265 0 = /dev/sdbm 65th SCSI disk whole disk
1266 16 = /dev/sdbn 66th SCSI disk whole disk
1267 32 = /dev/sdbo 67th SCSI disk whole disk
1268 ...
1269 240 = /dev/sdcb 80th SCSI disk whole disk
1271 Partitions are handled in the same way as for IDE
1272 disks (see major number 3) except that the limit on
1273 partitions is 15.
1275 69 char MA16 numeric accelerator card
1276 0 = /dev/ma16 Board memory access
1278 69 block SCSI disk devices (80-95)
1279 0 = /dev/sdcc 81st SCSI disk whole disk
1280 16 = /dev/sdcd 82nd SCSI disk whole disk
1281 32 = /dev/sdce 83th SCSI disk whole disk
1282 ...
1283 240 = /dev/sdcr 96th SCSI disk whole disk
1285 Partitions are handled in the same way as for IDE
1286 disks (see major number 3) except that the limit on
1287 partitions is 15.
1289 70 char SpellCaster Protocol Services Interface
1290 0 = /dev/apscfg Configuration interface
1291 1 = /dev/apsauth Authentication interface
1292 2 = /dev/apslog Logging interface
1293 3 = /dev/apsdbg Debugging interface
1294 64 = /dev/apsisdn ISDN command interface
1295 65 = /dev/apsasync Async command interface
1296 128 = /dev/apsmon Monitor interface
1298 70 block SCSI disk devices (96-111)
1299 0 = /dev/sdcs 97th SCSI disk whole disk
1300 16 = /dev/sdct 98th SCSI disk whole disk
1301 32 = /dev/sdcu 99th SCSI disk whole disk
1302 ...
1303 240 = /dev/sddh 112nd SCSI disk whole disk
1305 Partitions are handled in the same way as for IDE
1306 disks (see major number 3) except that the limit on
1307 partitions is 15.
1309 71 char Computone IntelliPort II serial card
1310 0 = /dev/ttyF0 IntelliPort II board 0, port 0
1311 1 = /dev/ttyF1 IntelliPort II board 0, port 1
1312 ...
1313 63 = /dev/ttyF63 IntelliPort II board 0, port 63
1314 64 = /dev/ttyF64 IntelliPort II board 1, port 0
1315 65 = /dev/ttyF65 IntelliPort II board 1, port 1
1316 ...
1317 127 = /dev/ttyF127 IntelliPort II board 1, port 63
1318 128 = /dev/ttyF128 IntelliPort II board 2, port 0
1319 129 = /dev/ttyF129 IntelliPort II board 2, port 1
1320 ...
1321 191 = /dev/ttyF191 IntelliPort II board 2, port 63
1322 192 = /dev/ttyF192 IntelliPort II board 3, port 0
1323 193 = /dev/ttyF193 IntelliPort II board 3, port 1
1324 ...
1325 255 = /dev/ttyF255 IntelliPort II board 3, port 63
1327 71 block SCSI disk devices (112-127)
1328 0 = /dev/sddi 113th SCSI disk whole disk
1329 16 = /dev/sddj 114th SCSI disk whole disk
1330 32 = /dev/sddk 115th SCSI disk whole disk
1331 ...
1332 240 = /dev/sddx 128th SCSI disk whole disk
1334 Partitions are handled in the same way as for IDE
1335 disks (see major number 3) except that the limit on
1336 partitions is 15.
1338 72 char Computone IntelliPort II serial card - alternate devices
1339 0 = /dev/cuf0 Callout device for ttyF0
1340 1 = /dev/cuf1 Callout device for ttyF1
1341 ...
1342 63 = /dev/cuf63 Callout device for ttyF63
1343 64 = /dev/cuf64 Callout device for ttyF64
1344 65 = /dev/cuf65 Callout device for ttyF65
1345 ...
1346 127 = /dev/cuf127 Callout device for ttyF127
1347 128 = /dev/cuf128 Callout device for ttyF128
1348 129 = /dev/cuf129 Callout device for ttyF129
1349 ...
1350 191 = /dev/cuf191 Callout device for ttyF191
1351 192 = /dev/cuf192 Callout device for ttyF192
1352 193 = /dev/cuf193 Callout device for ttyF193
1353 ...
1354 255 = /dev/cuf255 Callout device for ttyF255
1356 72 block Compaq Intelligent Drive Array, first controller
1357 0 = /dev/ida/c0d0 First logical drive whole disk
1358 16 = /dev/ida/c0d1 Second logical drive whole disk
1359 ...
1360 240 = /dev/ida/c0d15 16th logical drive whole disk
1362 Partitions are handled the same way as for Mylex
1363 DAC960 (see major number 48) except that the limit on
1364 partitions is 15.
1366 73 char Computone IntelliPort II serial card - control devices
1367 0 = /dev/ip2ipl0 Loadware device for board 0
1368 1 = /dev/ip2stat0 Status device for board 0
1369 4 = /dev/ip2ipl1 Loadware device for board 1
1370 5 = /dev/ip2stat1 Status device for board 1
1371 8 = /dev/ip2ipl2 Loadware device for board 2
1372 9 = /dev/ip2stat2 Status device for board 2
1373 12 = /dev/ip2ipl3 Loadware device for board 3
1374 13 = /dev/ip2stat3 Status device for board 3
1376 73 block Compaq Intelligent Drive Array, second controller
1377 0 = /dev/ida/c1d0 First logical drive whole disk
1378 16 = /dev/ida/c1d1 Second logical drive whole disk
1379 ...
1380 240 = /dev/ida/c1d15 16th logical drive whole disk
1382 Partitions are handled the same way as for Mylex
1383 DAC960 (see major number 48) except that the limit on
1384 partitions is 15.
1386 74 char SCI bridge
1387 0 = /dev/SCI/0 SCI device 0
1388 1 = /dev/SCI/1 SCI device 1
1389 ...
1391 Currently for Dolphin Interconnect Solutions' PCI-SCI
1392 bridge.
1394 74 block Compaq Intelligent Drive Array, third controller
1395 0 = /dev/ida/c2d0 First logical drive whole disk
1396 16 = /dev/ida/c2d1 Second logical drive whole disk
1397 ...
1398 240 = /dev/ida/c2d15 16th logical drive whole disk
1400 Partitions are handled the same way as for Mylex
1401 DAC960 (see major number 48) except that the limit on
1402 partitions is 15.
1404 75 char Specialix IO8+ serial card
1405 0 = /dev/ttyW0 First IO8+ port, first card
1406 1 = /dev/ttyW1 Second IO8+ port, first card
1407 ...
1408 8 = /dev/ttyW8 First IO8+ port, second card
1409 ...
1411 75 block Compaq Intelligent Drive Array, fourth controller
1412 0 = /dev/ida/c3d0 First logical drive whole disk
1413 16 = /dev/ida/c3d1 Second logical drive whole disk
1414 ...
1415 240 = /dev/ida/c3d15 16th logical drive whole disk
1417 Partitions are handled the same way as for Mylex
1418 DAC960 (see major number 48) except that the limit on
1419 partitions is 15.
1421 76 char Specialix IO8+ serial card - alternate devices
1422 0 = /dev/cuw0 Callout device for ttyW0
1423 1 = /dev/cuw1 Callout device for ttyW1
1424 ...
1425 8 = /dev/cuw8 Callout device for ttyW8
1426 ...
1428 76 block Compaq Intelligent Drive Array, fifth controller
1429 0 = /dev/ida/c4d0 First logical drive whole disk
1430 16 = /dev/ida/c4d1 Second logical drive whole disk
1431 ...
1432 240 = /dev/ida/c4d15 16th logical drive whole disk
1434 Partitions are handled the same way as for Mylex
1435 DAC960 (see major number 48) except that the limit on
1436 partitions is 15.
1439 77 char ComScire Quantum Noise Generator
1440 0 = /dev/qng ComScire Quantum Noise Generator
1442 77 block Compaq Intelligent Drive Array, sixth controller
1443 0 = /dev/ida/c5d0 First logical drive whole disk
1444 16 = /dev/ida/c5d1 Second logical drive whole disk
1445 ...
1446 240 = /dev/ida/c5d15 16th logical drive whole disk
1448 Partitions are handled the same way as for Mylex
1449 DAC960 (see major number 48) except that the limit on
1450 partitions is 15.
1452 78 char PAM Software's multimodem boards
1453 0 = /dev/ttyM0 First PAM modem
1454 1 = /dev/ttyM1 Second PAM modem
1455 ...
1457 78 block Compaq Intelligent Drive Array, seventh controller
1458 0 = /dev/ida/c6d0 First logical drive whole disk
1459 16 = /dev/ida/c6d1 Second logical drive whole disk
1460 ...
1461 240 = /dev/ida/c6d15 16th logical drive whole disk
1463 Partitions are handled the same way as for Mylex
1464 DAC960 (see major number 48) except that the limit on
1465 partitions is 15.
1467 79 char PAM Software's multimodem boards - alternate devices
1468 0 = /dev/cum0 Callout device for ttyM0
1469 1 = /dev/cum1 Callout device for ttyM1
1470 ...
1472 79 block Compaq Intelligent Drive Array, eighth controller
1473 0 = /dev/ida/c7d0 First logical drive whole disk
1474 16 = /dev/ida/c7d1 Second logical drive whole disk
1475 ...
1476 240 = /dev/ida/c715 16th logical drive whole disk
1478 Partitions are handled the same way as for Mylex
1479 DAC960 (see major number 48) except that the limit on
1480 partitions is 15.
1482 80 char Photometrics AT200 CCD camera
1483 0 = /dev/at200 Photometrics AT200 CCD camera
1485 80 block I2O hard disk
1486 0 = /dev/i2o/hda First I2O hard disk, whole disk
1487 16 = /dev/i2o/hdb Second I2O hard disk, whole disk
1488 ...
1489 240 = /dev/i2o/hdp 16th I2O hard disk, whole disk
1491 Partitions are handled in the same way as for IDE
1492 disks (see major number 3) except that the limit on
1493 partitions is 15.
1495 81 char video4linux
1496 0 = /dev/video0 Video capture/overlay device
1497 ...
1498 63 = /dev/video63 Video capture/overlay device
1499 64 = /dev/radio0 Radio device
1500 ...
1501 127 = /dev/radio63 Radio device
1502 224 = /dev/vbi0 Vertical blank interrupt
1503 ...
1504 255 = /dev/vbi31 Vertical blank interrupt
1506 81 block I2O hard disk
1507 0 = /dev/i2o/hdq 17th I2O hard disk, whole disk
1508 16 = /dev/i2o/hdr 18th I2O hard disk, whole disk
1509 ...
1510 240 = /dev/i2o/hdaf 32nd I2O hard disk, whole disk
1512 Partitions are handled in the same way as for IDE
1513 disks (see major number 3) except that the limit on
1514 partitions is 15.
1516 82 char WiNRADiO communications receiver card
1517 0 = /dev/winradio0 First WiNRADiO card
1518 1 = /dev/winradio1 Second WiNRADiO card
1519 ...
1521 The driver and documentation may be obtained from
1522 http://www.winradio.com/
1524 82 block I2O hard disk
1525 0 = /dev/i2o/hdag 33rd I2O hard disk, whole disk
1526 16 = /dev/i2o/hdah 34th I2O hard disk, whole disk
1527 ...
1528 240 = /dev/i2o/hdav 48th I2O hard disk, whole disk
1530 Partitions are handled in the same way as for IDE
1531 disks (see major number 3) except that the limit on
1532 partitions is 15.
1534 83 char Matrox mga_vid video driver
1535 0 = /dev/mga_vid0 1st video card
1536 1 = /dev/mga_vid1 2nd video card
1537 2 = /dev/mga_vid2 3rd video card
1538 ...
1539 15 = /dev/mga_vid15 16th video card
1541 83 block I2O hard disk
1542 0 = /dev/i2o/hdaw 49th I2O hard disk, whole disk
1543 16 = /dev/i2o/hdax 50th I2O hard disk, whole disk
1544 ...
1545 240 = /dev/i2o/hdbl 64th I2O hard disk, whole disk
1547 Partitions are handled in the same way as for IDE
1548 disks (see major number 3) except that the limit on
1549 partitions is 15.
1551 84 char Ikon 1011[57] Versatec Greensheet Interface
1552 0 = /dev/ihcp0 First Greensheet port
1553 1 = /dev/ihcp1 Second Greensheet port
1555 84 block I2O hard disk
1556 0 = /dev/i2o/hdbm 65th I2O hard disk, whole disk
1557 16 = /dev/i2o/hdbn 66th I2O hard disk, whole disk
1558 ...
1559 240 = /dev/i2o/hdcb 80th I2O hard disk, whole disk
1561 Partitions are handled in the same way as for IDE
1562 disks (see major number 3) except that the limit on
1563 partitions is 15.
1565 85 char Linux/SGI shared memory input queue
1566 0 = /dev/shmiq Master shared input queue
1567 1 = /dev/qcntl0 First device pushed
1568 2 = /dev/qcntl1 Second device pushed
1569 ...
1571 85 block I2O hard disk
1572 0 = /dev/i2o/hdcc 81st I2O hard disk, whole disk
1573 16 = /dev/i2o/hdcd 82nd I2O hard disk, whole disk
1574 ...
1575 240 = /dev/i2o/hdcr 96th I2O hard disk, whole disk
1577 Partitions are handled in the same way as for IDE
1578 disks (see major number 3) except that the limit on
1579 partitions is 15.
1581 86 char SCSI media changer
1582 0 = /dev/sch0 First SCSI media changer
1583 1 = /dev/sch1 Second SCSI media changer
1584 ...
1586 86 block I2O hard disk
1587 0 = /dev/i2o/hdcs 97th I2O hard disk, whole disk
1588 16 = /dev/i2o/hdct 98th I2O hard disk, whole disk
1589 ...
1590 240 = /dev/i2o/hddh 112th I2O hard disk, whole disk
1592 Partitions are handled in the same way as for IDE
1593 disks (see major number 3) except that the limit on
1594 partitions is 15.
1596 87 char Sony Control-A1 stereo control bus
1597 0 = /dev/controla0 First device on chain
1598 1 = /dev/controla1 Second device on chain
1599 ...
1601 87 block I2O hard disk
1602 0 = /dev/i2o/hddi 113rd I2O hard disk, whole disk
1603 16 = /dev/i2o/hddj 114th I2O hard disk, whole disk
1604 ...
1605 240 = /dev/i2o/hddx 128th I2O hard disk, whole disk
1607 Partitions are handled in the same way as for IDE
1608 disks (see major number 3) except that the limit on
1609 partitions is 15.
1611 88 char COMX synchronous serial card
1612 0 = /dev/comx0 COMX channel 0
1613 1 = /dev/comx1 COMX channel 1
1614 ...
1616 88 block Seventh IDE hard disk/CD-ROM interface
1617 0 = /dev/hdm Master: whole disk (or CD-ROM)
1618 64 = /dev/hdn Slave: whole disk (or CD-ROM)
1620 Partitions are handled the same way as for the first
1621 interface (see major number 3).
1623 89 char I2C bus interface
1624 0 = /dev/i2c-0 First I2C adapter
1625 1 = /dev/i2c-1 Second I2C adapter
1626 ...
1628 89 block Eighth IDE hard disk/CD-ROM interface
1629 0 = /dev/hdo Master: whole disk (or CD-ROM)
1630 64 = /dev/hdp Slave: whole disk (or CD-ROM)
1632 Partitions are handled the same way as for the first
1633 interface (see major number 3).
1635 90 char Memory Technology Device (RAM, ROM, Flash)
1636 0 = /dev/mtd0 First MTD (rw)
1637 1 = /dev/mtdr0 First MTD (ro)
1638 ...
1639 30 = /dev/mtd15 16th MTD (rw)
1640 31 = /dev/mtdr15 16th MTD (ro)
1642 90 block Ninth IDE hard disk/CD-ROM interface
1643 0 = /dev/hdq Master: whole disk (or CD-ROM)
1644 64 = /dev/hdr Slave: whole disk (or CD-ROM)
1646 Partitions are handled the same way as for the first
1647 interface (see major number 3).
1649 91 char CAN-Bus devices
1650 0 = /dev/can0 First CAN-Bus controller
1651 1 = /dev/can1 Second CAN-Bus controller
1652 ...
1654 91 block Tenth IDE hard disk/CD-ROM interface
1655 0 = /dev/hds Master: whole disk (or CD-ROM)
1656 64 = /dev/hdt Slave: whole disk (or CD-ROM)
1658 Partitions are handled the same way as for the first
1659 interface (see major number 3).
1661 92 char Reserved for ith Kommunikationstechnik MIC ISDN card
1663 92 block PPDD encrypted disk driver
1664 0 = /dev/ppdd0 First encrypted disk
1665 1 = /dev/ppdd1 Second encrypted disk
1666 ...
1668 Partitions are handled in the same way as for IDE
1669 disks (see major number 3) except that the limit on
1670 partitions is 15.
1672 93 char
1674 93 block NAND Flash Translation Layer filesystem
1675 0 = /dev/nftla First NFTL layer
1676 16 = /dev/nftlb Second NFTL layer
1677 ...
1678 240 = /dev/nftlp 16th NTFL layer
1680 94 char
1682 94 block IBM S/390 DASD block storage
1683 0 = /dev/dasda First DASD device, major
1684 1 = /dev/dasda1 First DASD device, block 1
1685 2 = /dev/dasda2 First DASD device, block 2
1686 3 = /dev/dasda3 First DASD device, block 3
1687 4 = /dev/dasdb Second DASD device, major
1688 5 = /dev/dasdb1 Second DASD device, block 1
1689 6 = /dev/dasdb2 Second DASD device, block 2
1690 7 = /dev/dasdb3 Second DASD device, block 3
1691 ...
1693 95 char IP filter
1694 0 = /dev/ipl Filter control device/log file
1695 1 = /dev/ipnat NAT control device/log file
1696 2 = /dev/ipstate State information log file
1697 3 = /dev/ipauth Authentication control device/log file
1698 ...
1700 96 char Parallel port ATAPI tape devices
1701 0 = /dev/pt0 First parallel port ATAPI tape
1702 1 = /dev/pt1 Second parallel port ATAPI tape
1703 ...
1704 128 = /dev/npt0 First p.p. ATAPI tape, no rewind
1705 129 = /dev/npt1 Second p.p. ATAPI tape, no rewind
1706 ...
1708 96 block Inverse NAND Flash Translation Layer
1709 0 = /dev/inftla First INFTL layer
1710 16 = /dev/inftlb Second INFTL layer
1711 ...
1712 240 = /dev/inftlp 16th INTFL layer
1714 97 char Parallel port generic ATAPI interface
1715 0 = /dev/pg0 First parallel port ATAPI device
1716 1 = /dev/pg1 Second parallel port ATAPI device
1717 2 = /dev/pg2 Third parallel port ATAPI device
1718 3 = /dev/pg3 Fourth parallel port ATAPI device
1720 These devices support the same API as the generic SCSI
1721 devices.
1723 98 char Control and Measurement Device (comedi)
1724 0 = /dev/comedi0 First comedi device
1725 1 = /dev/comedi1 Second comedi device
1726 ...
1728 See http://stm.lbl.gov/comedi.
1730 98 block User-mode virtual block device
1731 0 = /dev/ubda First user-mode block device
1732 16 = /dev/udbb Second user-mode block device
1733 ...
1735 Partitions are handled in the same way as for IDE
1736 disks (see major number 3) except that the limit on
1737 partitions is 15.
1739 This device is used by the user-mode virtual kernel port.
1741 99 char Raw parallel ports
1742 0 = /dev/parport0 First parallel port
1743 1 = /dev/parport1 Second parallel port
1744 ...
1746 99 block JavaStation flash disk
1747 0 = /dev/jsfd JavaStation flash disk
1749 100 char Telephony for Linux
1750 0 = /dev/phone0 First telephony device
1751 1 = /dev/phone1 Second telephony device
1752 ...
1754 101 char Motorola DSP 56xxx board
1755 0 = /dev/mdspstat Status information
1756 1 = /dev/mdsp1 First DSP board I/O controls
1757 ...
1758 16 = /dev/mdsp16 16th DSP board I/O controls
1760 101 block AMI HyperDisk RAID controller
1761 0 = /dev/amiraid/ar0 First array whole disk
1762 16 = /dev/amiraid/ar1 Second array whole disk
1763 ...
1764 240 = /dev/amiraid/ar15 16th array whole disk
1766 For each device, partitions are added as:
1767 0 = /dev/amiraid/ar? Whole disk
1768 1 = /dev/amiraid/ar?p1 First partition
1769 2 = /dev/amiraid/ar?p2 Second partition
1770 ...
1771 15 = /dev/amiraid/ar?p15 15th partition
1773 102 char
1775 102 block Compressed block device
1776 0 = /dev/cbd/a First compressed block device, whole device
1777 16 = /dev/cbd/b Second compressed block device, whole device
1778 ...
1779 240 = /dev/cbd/p 16th compressed block device, whole device
1781 Partitions are handled in the same way as for IDE
1782 disks (see major number 3) except that the limit on
1783 partitions is 15.
1785 103 char Arla network file system
1786 0 = /dev/nnpfs0 First NNPFS device
1787 1 = /dev/nnpfs1 Second NNPFS device
1789 Arla is a free clone of the Andrew File System, AFS.
1790 The NNPFS device gives user mode filesystem
1791 implementations a kernel presence for caching and easy
1792 mounting. For more information about the project,
1793 write to <arla-drinkers@stacken.kth.se> or see
1794 http://www.stacken.kth.se/project/arla/
1796 103 block Audit device
1797 0 = /dev/audit Audit device
1799 104 char Flash BIOS support
1801 104 block Compaq Next Generation Drive Array, first controller
1802 0 = /dev/cciss/c0d0 First logical drive, whole disk
1803 16 = /dev/cciss/c0d1 Second logical drive, whole disk
1804 ...
1805 240 = /dev/cciss/c0d15 16th logical drive, whole disk
1807 Partitions are handled the same way as for Mylex
1808 DAC960 (see major number 48) except that the limit on
1809 partitions is 15.
1811 105 char Comtrol VS-1000 serial controller
1812 0 = /dev/ttyV0 First VS-1000 port
1813 1 = /dev/ttyV1 Second VS-1000 port
1814 ...
1816 105 block Compaq Next Generation Drive Array, second controller
1817 0 = /dev/cciss/c1d0 First logical drive, whole disk
1818 16 = /dev/cciss/c1d1 Second logical drive, whole disk
1819 ...
1820 240 = /dev/cciss/c1d15 16th logical drive, whole disk
1822 Partitions are handled the same way as for Mylex
1823 DAC960 (see major number 48) except that the limit on
1824 partitions is 15.
1826 106 char Comtrol VS-1000 serial controller - alternate devices
1827 0 = /dev/cuv0 First VS-1000 port
1828 1 = /dev/cuv1 Second VS-1000 port
1829 ...
1831 106 block Compaq Next Generation Drive Array, third controller
1832 0 = /dev/cciss/c2d0 First logical drive, whole disk
1833 16 = /dev/cciss/c2d1 Second logical drive, whole disk
1834 ...
1835 240 = /dev/cciss/c2d15 16th logical drive, whole disk
1837 Partitions are handled the same way as for Mylex
1838 DAC960 (see major number 48) except that the limit on
1839 partitions is 15.
1841 107 char 3Dfx Voodoo Graphics device
1842 0 = /dev/3dfx Primary 3Dfx graphics device
1844 107 block Compaq Next Generation Drive Array, fourth controller
1845 0 = /dev/cciss/c3d0 First logical drive, whole disk
1846 16 = /dev/cciss/c3d1 Second logical drive, whole disk
1847 ...
1848 240 = /dev/cciss/c3d15 16th logical drive, whole disk
1850 Partitions are handled the same way as for Mylex
1851 DAC960 (see major number 48) except that the limit on
1852 partitions is 15.
1854 108 char Device independent PPP interface
1855 0 = /dev/ppp Device independent PPP interface
1857 108 block Compaq Next Generation Drive Array, fifth controller
1858 0 = /dev/cciss/c4d0 First logical drive, whole disk
1859 16 = /dev/cciss/c4d1 Second logical drive, whole disk
1860 ...
1861 240 = /dev/cciss/c4d15 16th logical drive, whole disk
1863 Partitions are handled the same way as for Mylex
1864 DAC960 (see major number 48) except that the limit on
1865 partitions is 15.
1867 109 char Reserved for logical volume manager
1869 109 block Compaq Next Generation Drive Array, sixth controller
1870 0 = /dev/cciss/c5d0 First logical drive, whole disk
1871 16 = /dev/cciss/c5d1 Second logical drive, whole disk
1872 ...
1873 240 = /dev/cciss/c5d15 16th logical drive, whole disk
1875 Partitions are handled the same way as for Mylex
1876 DAC960 (see major number 48) except that the limit on
1877 partitions is 15.
1879 110 char miroMEDIA Surround board
1880 0 = /dev/srnd0 First miroMEDIA Surround board
1881 1 = /dev/srnd1 Second miroMEDIA Surround board
1882 ...
1884 110 block Compaq Next Generation Drive Array, seventh controller
1885 0 = /dev/cciss/c6d0 First logical drive, whole disk
1886 16 = /dev/cciss/c6d1 Second logical drive, whole disk
1887 ...
1888 240 = /dev/cciss/c6d15 16th logical drive, whole disk
1890 Partitions are handled the same way as for Mylex
1891 DAC960 (see major number 48) except that the limit on
1892 partitions is 15.
1894 111 char
1896 111 block Compaq Next Generation Drive Array, eighth controller
1897 0 = /dev/cciss/c7d0 First logical drive, whole disk
1898 16 = /dev/cciss/c7d1 Second logical drive, whole disk
1899 ...
1900 240 = /dev/cciss/c7d15 16th logical drive, whole disk
1902 Partitions are handled the same way as for Mylex
1903 DAC960 (see major number 48) except that the limit on
1904 partitions is 15.
1906 112 char ISI serial card
1907 0 = /dev/ttyM0 First ISI port
1908 1 = /dev/ttyM1 Second ISI port
1909 ...
1911 There is currently a device-naming conflict between
1912 these and PAM multimodems (major 78).
1914 112 block IBM iSeries virtual disk
1915 0 = /dev/iseries/vda First virtual disk, whole disk
1916 8 = /dev/iseries/vdb Second virtual disk, whole disk
1917 ...
1918 200 = /dev/iseries/vdz 26th virtual disk, whole disk
1919 208 = /dev/iseries/vdaa 27th virtual disk, whole disk
1920 ...
1921 248 = /dev/iseries/vdaf 32nd virtual disk, whole disk
1923 Partitions are handled in the same way as for IDE
1924 disks (see major number 3) except that the limit on
1925 partitions is 7.
1927 113 char ISI serial card - alternate devices
1928 0 = /dev/cum0 Callout device for ttyM0
1929 1 = /dev/cum1 Callout device for ttyM1
1930 ...
1932 113 block IBM iSeries virtual CD-ROM
1933 0 = /dev/iseries/vcda First virtual CD-ROM
1934 1 = /dev/iseries/vcdb Second virtual CD-ROM
1935 ...
1937 114 char Picture Elements ISE board
1938 0 = /dev/ise0 First ISE board
1939 1 = /dev/ise1 Second ISE board
1940 ...
1941 128 = /dev/isex0 Control node for first ISE board
1942 129 = /dev/isex1 Control node for second ISE board
1943 ...
1945 The ISE board is an embedded computer, optimized for
1946 image processing. The /dev/iseN nodes are the general
1947 I/O access to the board, the /dev/isex0 nodes command
1948 nodes used to control the board.
1950 114 block IDE BIOS powered software RAID interfaces such as the
1951 Promise Fastrak
1953 0 = /dev/ataraid/d0
1954 1 = /dev/ataraid/d0p1
1955 2 = /dev/ataraid/d0p2
1956 ...
1957 16 = /dev/ataraid/d1
1958 17 = /dev/ataraid/d1p1
1959 18 = /dev/ataraid/d1p2
1960 ...
1961 255 = /dev/ataraid/d15p15
1963 Partitions are handled in the same way as for IDE
1964 disks (see major number 3) except that the limit on
1965 partitions is 15.
1967 115 char TI link cable devices (115 was formerly the console driver speaker)
1968 0 = /dev/tipar0 Parallel cable on first parallel port
1969 ...
1970 7 = /dev/tipar7 Parallel cable on seventh parallel port
1972 8 = /dev/tiser0 Serial cable on first serial port
1973 ...
1974 15 = /dev/tiser7 Serial cable on seventh serial port
1976 16 = /dev/tiusb0 First USB cable
1977 ...
1978 47 = /dev/tiusb31 32nd USB cable
1980 115 block NetWare (NWFS) Devices (0-255)
1982 The NWFS (NetWare) devices are used to present a
1983 collection of NetWare Mirror Groups or NetWare
1984 Partitions as a logical storage segment for
1985 use in mounting NetWare volumes. A maximum of
1986 256 NetWare volumes can be supported in a single
1987 machine.
1989 http://cgfa.telepac.pt/ftp2/kernel.org/linux/kernel/people/jmerkey/nwfs/
1991 0 = /dev/nwfs/v0 First NetWare (NWFS) Logical Volume
1992 1 = /dev/nwfs/v1 Second NetWare (NWFS) Logical Volume
1993 2 = /dev/nwfs/v2 Third NetWare (NWFS) Logical Volume
1994 ...
1995 255 = /dev/nwfs/v255 Last NetWare (NWFS) Logical Volume
1997 116 char Advanced Linux Sound Driver (ALSA)
1999 116 block MicroMemory battery backed RAM adapter (NVRAM)
2000 Supports 16 boards, 15 partitions each.
2001 Requested by neilb at cse.unsw.edu.au.
2003 0 = /dev/umem/d0 Whole of first board
2004 1 = /dev/umem/d0p1 First partition of first board
2005 2 = /dev/umem/d0p2 Second partition of first board
2006 15 = /dev/umem/d0p15 15th partition of first board
2008 16 = /dev/umem/d1 Whole of second board
2009 17 = /dev/umem/d1p1 First partition of second board
2010 ...
2011 255= /dev/umem/d15p15 15th partition of 16th board.
2013 117 char COSA/SRP synchronous serial card
2014 0 = /dev/cosa0c0 1st board, 1st channel
2015 1 = /dev/cosa0c1 1st board, 2nd channel
2016 ...
2017 16 = /dev/cosa1c0 2nd board, 1st channel
2018 17 = /dev/cosa1c1 2nd board, 2nd channel
2019 ...
2021 117 block Enterprise Volume Management System (EVMS)
2023 The EVMS driver uses a layered, plug-in model to provide
2024 unparalleled flexibility and extensibility in managing
2025 storage. This allows for easy expansion or customization
2026 of various levels of volume management. Requested by
2027 Mark Peloquin (peloquin at us.ibm.com).
2029 Note: EVMS populates and manages all the devnodes in
2030 /dev/evms.
2032 http://sf.net/projects/evms
2034 0 = /dev/evms/block_device EVMS block device
2035 1 = /dev/evms/legacyname1 First EVMS legacy device
2036 2 = /dev/evms/legacyname2 Second EVMS legacy device
2037 ...
2038 Both ranges can grow (down or up) until they meet.
2039 ...
2040 254 = /dev/evms/EVMSname2 Second EVMS native device
2041 255 = /dev/evms/EVMSname1 First EVMS native device
2043 Note: legacyname(s) are derived from the normal legacy
2044 device names. For example, /dev/hda5 would become
2045 /dev/evms/hda5.
2047 118 char IBM Cryptographic Accelerator
2048 0 = /dev/ica Virtual interface to all IBM Crypto Accelerators
2049 1 = /dev/ica0 IBMCA Device 0
2050 2 = /dev/ica1 IBMCA Device 1
2051 ...
2053 119 char VMware virtual network control
2054 0 = /dev/vnet0 1st virtual network
2055 1 = /dev/vnet1 2nd virtual network
2056 ...
2058 120-127 char LOCAL/EXPERIMENTAL USE
2060 120-127 block LOCAL/EXPERIMENTAL USE
2061 Allocated for local/experimental use. For devices not
2062 assigned official numbers, these ranges should be
2063 used in order to avoid conflicting with future assignments.
2065 128-135 char Unix98 PTY masters
2067 These devices should not have corresponding device
2068 nodes; instead they should be accessed through the
2069 /dev/ptmx cloning interface.
2071 128 block SCSI disk devices (128-143)
2072 0 = /dev/sddy 129th SCSI disk whole disk
2073 16 = /dev/sddz 130th SCSI disk whole disk
2074 32 = /dev/sdea 131th SCSI disk whole disk
2075 ...
2076 240 = /dev/sden 144th SCSI disk whole disk
2078 Partitions are handled in the same way as for IDE
2079 disks (see major number 3) except that the limit on
2080 partitions is 15.
2082 129 block SCSI disk devices (144-159)
2083 0 = /dev/sdeo 145th SCSI disk whole disk
2084 16 = /dev/sdep 146th SCSI disk whole disk
2085 32 = /dev/sdeq 147th SCSI disk whole disk
2086 ...
2087 240 = /dev/sdfd 160th SCSI disk whole disk
2089 Partitions are handled in the same way as for IDE
2090 disks (see major number 3) except that the limit on
2091 partitions is 15.
2093 130 char (Misc devices)
2095 130 block SCSI disk devices (160-175)
2096 0 = /dev/sdfe 161st SCSI disk whole disk
2097 16 = /dev/sdff 162nd SCSI disk whole disk
2098 32 = /dev/sdfg 163rd SCSI disk whole disk
2099 ...
2100 240 = /dev/sdft 176th SCSI disk whole disk
2102 Partitions are handled in the same way as for IDE
2103 disks (see major number 3) except that the limit on
2104 partitions is 15.
2106 131 block SCSI disk devices (176-191)
2107 0 = /dev/sdfu 177th SCSI disk whole disk
2108 16 = /dev/sdfv 178th SCSI disk whole disk
2109 32 = /dev/sdfw 179th SCSI disk whole disk
2110 ...
2111 240 = /dev/sdgj 192nd SCSI disk whole disk
2113 Partitions are handled in the same way as for IDE
2114 disks (see major number 3) except that the limit on
2115 partitions is 15.
2117 132 block SCSI disk devices (192-207)
2118 0 = /dev/sdgk 193rd SCSI disk whole disk
2119 16 = /dev/sdgl 194th SCSI disk whole disk
2120 32 = /dev/sdgm 195th SCSI disk whole disk
2121 ...
2122 240 = /dev/sdgz 208th SCSI disk whole disk
2124 Partitions are handled in the same way as for IDE
2125 disks (see major number 3) except that the limit on
2126 partitions is 15.
2128 133 block SCSI disk devices (208-223)
2129 0 = /dev/sdha 209th SCSI disk whole disk
2130 16 = /dev/sdhb 210th SCSI disk whole disk
2131 32 = /dev/sdhc 211th SCSI disk whole disk
2132 ...
2133 240 = /dev/sdhp 224th SCSI disk whole disk
2135 Partitions are handled in the same way as for IDE
2136 disks (see major number 3) except that the limit on
2137 partitions is 15.
2139 134 block SCSI disk devices (224-239)
2140 0 = /dev/sdhq 225th SCSI disk whole disk
2141 16 = /dev/sdhr 226th SCSI disk whole disk
2142 32 = /dev/sdhs 227th SCSI disk whole disk
2143 ...
2144 240 = /dev/sdif 240th SCSI disk whole disk
2146 Partitions are handled in the same way as for IDE
2147 disks (see major number 3) except that the limit on
2148 partitions is 15.
2150 135 block SCSI disk devices (240-255)
2151 0 = /dev/sdig 241st SCSI disk whole disk
2152 16 = /dev/sdih 242nd SCSI disk whole disk
2153 32 = /dev/sdih 243rd SCSI disk whole disk
2154 ...
2155 240 = /dev/sdiv 256th SCSI disk whole disk
2157 Partitions are handled in the same way as for IDE
2158 disks (see major number 3) except that the limit on
2159 partitions is 15.
2161 136-143 char Unix98 PTY slaves
2162 0 = /dev/pts/0 First Unix98 pseudo-TTY
2163 1 = /dev/pts/1 Second Unix98 pseudo-TTY
2164 ...
2166 These device nodes are automatically generated with
2167 the proper permissions and modes by mounting the
2168 devpts filesystem onto /dev/pts with the appropriate
2169 mount options (distribution dependent, however, on
2170 *most* distributions the appropriate options are
2171 "mode=0620,gid=<gid of the "tty" group>".)
2173 136 block Mylex DAC960 PCI RAID controller; ninth controller
2174 0 = /dev/rd/c8d0 First disk, whole disk
2175 8 = /dev/rd/c8d1 Second disk, whole disk
2176 ...
2177 248 = /dev/rd/c8d31 32nd disk, whole disk
2179 Partitions are handled as for major 48.
2181 137 block Mylex DAC960 PCI RAID controller; tenth controller
2182 0 = /dev/rd/c9d0 First disk, whole disk
2183 8 = /dev/rd/c9d1 Second disk, whole disk
2184 ...
2185 248 = /dev/rd/c9d31 32nd disk, whole disk
2187 Partitions are handled as for major 48.
2189 138 block Mylex DAC960 PCI RAID controller; eleventh controller
2190 0 = /dev/rd/c10d0 First disk, whole disk
2191 8 = /dev/rd/c10d1 Second disk, whole disk
2192 ...
2193 248 = /dev/rd/c10d31 32nd disk, whole disk
2195 Partitions are handled as for major 48.
2197 139 block Mylex DAC960 PCI RAID controller; twelfth controller
2198 0 = /dev/rd/c11d0 First disk, whole disk
2199 8 = /dev/rd/c11d1 Second disk, whole disk
2200 ...
2201 248 = /dev/rd/c11d31 32nd disk, whole disk
2203 Partitions are handled as for major 48.
2205 140 block Mylex DAC960 PCI RAID controller; thirteenth controller
2206 0 = /dev/rd/c12d0 First disk, whole disk
2207 8 = /dev/rd/c12d1 Second disk, whole disk
2208 ...
2209 248 = /dev/rd/c12d31 32nd disk, whole disk
2211 Partitions are handled as for major 48.
2213 141 block Mylex DAC960 PCI RAID controller; fourteenth controller
2214 0 = /dev/rd/c13d0 First disk, whole disk
2215 8 = /dev/rd/c13d1 Second disk, whole disk
2216 ...
2217 248 = /dev/rd/c13d31 32nd disk, whole disk
2219 Partitions are handled as for major 48.
2221 142 block Mylex DAC960 PCI RAID controller; fifteenth controller
2222 0 = /dev/rd/c14d0 First disk, whole disk
2223 8 = /dev/rd/c14d1 Second disk, whole disk
2224 ...
2225 248 = /dev/rd/c14d31 32nd disk, whole disk
2227 Partitions are handled as for major 48.
2229 143 block Mylex DAC960 PCI RAID controller; sixteenth controller
2230 0 = /dev/rd/c15d0 First disk, whole disk
2231 8 = /dev/rd/c15d1 Second disk, whole disk
2232 ...
2233 248 = /dev/rd/c15d31 32nd disk, whole disk
2235 Partitions are handled as for major 48.
2237 144 char Encapsulated PPP
2238 0 = /dev/pppox0 First PPP over Ethernet
2239 ...
2240 63 = /dev/pppox63 64th PPP over Ethernet
2242 This is primarily used for ADSL.
2244 The SST 5136-DN DeviceNet interface driver has been
2245 relocated to major 183 due to an unfortunate conflict.
2247 144 block Expansion Area #1 for more non-device (e.g. NFS) mounts
2248 0 = mounted device 256
2249 255 = mounted device 511
2251 145 char SAM9407-based soundcard
2252 0 = /dev/sam0_mixer
2253 1 = /dev/sam0_sequencer
2254 2 = /dev/sam0_midi00
2255 3 = /dev/sam0_dsp
2256 4 = /dev/sam0_audio
2257 6 = /dev/sam0_sndstat
2258 18 = /dev/sam0_midi01
2259 34 = /dev/sam0_midi02
2260 50 = /dev/sam0_midi03
2261 64 = /dev/sam1_mixer
2262 ...
2263 128 = /dev/sam2_mixer
2264 ...
2265 192 = /dev/sam3_mixer
2266 ...
2268 Device functions match OSS, but offer a number of
2269 addons, which are sam9407 specific. OSS can be
2270 operated simultaneously, taking care of the codec.
2272 145 block Expansion Area #2 for more non-device (e.g. NFS) mounts
2273 0 = mounted device 512
2274 255 = mounted device 767
2276 146 char SYSTRAM SCRAMNet mirrored-memory network
2277 0 = /dev/scramnet0 First SCRAMNet device
2278 1 = /dev/scramnet1 Second SCRAMNet device
2279 ...
2281 146 block Expansion Area #3 for more non-device (e.g. NFS) mounts
2282 0 = mounted device 768
2283 255 = mounted device 1023
2285 147 char Aureal Semiconductor Vortex Audio device
2286 0 = /dev/aureal0 First Aureal Vortex
2287 1 = /dev/aureal1 Second Aureal Vortex
2288 ...
2290 147 block Distributed Replicated Block Device (DRBD)
2291 0 = /dev/drbd0 First DRBD device
2292 1 = /dev/drbd1 Second DRBD device
2293 ...
2295 148 char Technology Concepts serial card
2296 0 = /dev/ttyT0 First TCL port
2297 1 = /dev/ttyT1 Second TCL port
2298 ...
2300 149 char Technology Concepts serial card - alternate devices
2301 0 = /dev/cut0 Callout device for ttyT0
2302 1 = /dev/cut0 Callout device for ttyT1
2303 ...
2305 150 char Real-Time Linux FIFOs
2306 0 = /dev/rtf0 First RTLinux FIFO
2307 1 = /dev/rtf1 Second RTLinux FIFO
2308 ...
2310 151 char DPT I2O SmartRaid V controller
2311 0 = /dev/dpti0 First DPT I2O adapter
2312 1 = /dev/dpti1 Second DPT I2O adapter
2313 ...
2315 152 char EtherDrive Control Device
2316 0 = /dev/etherd/ctl Connect/Disconnect an EtherDrive
2317 1 = /dev/etherd/err Monitor errors
2318 2 = /dev/etherd/raw Raw AoE packet monitor
2320 152 block EtherDrive Block Devices
2321 0 = /dev/etherd/0 EtherDrive 0
2322 ...
2323 255 = /dev/etherd/255 EtherDrive 255
2325 153 char SPI Bus Interface (sometimes referred to as MicroWire)
2326 0 = /dev/spi0 First SPI device on the bus
2327 1 = /dev/spi1 Second SPI device on the bus
2328 ...
2329 15 = /dev/spi15 Sixteenth SPI device on the bus
2331 153 block Enhanced Metadisk RAID (EMD) storage units
2332 0 = /dev/emd/0 First unit
2333 1 = /dev/emd/0p1 Partition 1 on First unit
2334 2 = /dev/emd/0p2 Partition 2 on First unit
2335 ...
2336 15 = /dev/emd/0p15 Partition 15 on First unit
2338 16 = /dev/emd/1 Second unit
2339 32 = /dev/emd/2 Third unit
2340 ...
2341 240 = /dev/emd/15 Sixteenth unit
2343 Partitions are handled in the same way as for IDE
2344 disks (see major number 3) except that the limit on
2345 partitions is 15.
2347 154 char Specialix RIO serial card
2348 0 = /dev/ttySR0 First RIO port
2349 ...
2350 255 = /dev/ttySR255 256th RIO port
2352 155 char Specialix RIO serial card - alternate devices
2353 0 = /dev/cusr0 Callout device for ttySR0
2354 ...
2355 255 = /dev/cusr255 Callout device for ttySR255
2357 156 char Specialix RIO serial card
2358 0 = /dev/ttySR256 257th RIO port
2359 ...
2360 255 = /dev/ttySR511 512th RIO port
2362 157 char Specialix RIO serial card - alternate devices
2363 0 = /dev/cusr256 Callout device for ttySR256
2364 ...
2365 255 = /dev/cusr511 Callout device for ttySR511
2367 158 char Dialogic GammaLink fax driver
2368 0 = /dev/gfax0 GammaLink channel 0
2369 1 = /dev/gfax1 GammaLink channel 1
2370 ...
2372 159 char RESERVED
2374 159 block RESERVED
2376 160 char General Purpose Instrument Bus (GPIB)
2377 0 = /dev/gpib0 First GPIB bus
2378 1 = /dev/gpib1 Second GPIB bus
2379 ...
2381 160 block Carmel 8-port SATA Disks on First Controller
2382 0 = /dev/carmel/0 SATA disk 0 whole disk
2383 1 = /dev/carmel/0p1 SATA disk 0 partition 1
2384 ...
2385 31 = /dev/carmel/0p31 SATA disk 0 partition 31
2387 32 = /dev/carmel/1 SATA disk 1 whole disk
2388 64 = /dev/carmel/2 SATA disk 2 whole disk
2389 ...
2390 224 = /dev/carmel/7 SATA disk 7 whole disk
2392 Partitions are handled in the same way as for IDE
2393 disks (see major number 3) except that the limit on
2394 partitions is 31.
2396 161 char IrCOMM devices (IrDA serial/parallel emulation)
2397 0 = /dev/ircomm0 First IrCOMM device
2398 1 = /dev/ircomm1 Second IrCOMM device
2399 ...
2400 16 = /dev/irlpt0 First IrLPT device
2401 17 = /dev/irlpt1 Second IrLPT device
2402 ...
2404 161 block Carmel 8-port SATA Disks on Second Controller
2405 0 = /dev/carmel/8 SATA disk 8 whole disk
2406 1 = /dev/carmel/8p1 SATA disk 8 partition 1
2407 ...
2408 31 = /dev/carmel/8p31 SATA disk 8 partition 31
2410 32 = /dev/carmel/9 SATA disk 9 whole disk
2411 64 = /dev/carmel/10 SATA disk 10 whole disk
2412 ...
2413 224 = /dev/carmel/15 SATA disk 15 whole disk
2415 Partitions are handled in the same way as for IDE
2416 disks (see major number 3) except that the limit on
2417 partitions is 31.
2419 162 char Raw block device interface
2420 0 = /dev/rawctl Raw I/O control device
2421 1 = /dev/raw/raw1 First raw I/O device
2422 2 = /dev/raw/raw2 Second raw I/O device
2423 ...
2425 163 char
2427 164 char Chase Research AT/PCI-Fast serial card
2428 0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0
2429 ...
2430 15 = /dev/ttyCH15 AT/PCI-Fast board 0, port 15
2431 16 = /dev/ttyCH16 AT/PCI-Fast board 1, port 0
2432 ...
2433 31 = /dev/ttyCH31 AT/PCI-Fast board 1, port 15
2434 32 = /dev/ttyCH32 AT/PCI-Fast board 2, port 0
2435 ...
2436 47 = /dev/ttyCH47 AT/PCI-Fast board 2, port 15
2437 48 = /dev/ttyCH48 AT/PCI-Fast board 3, port 0
2438 ...
2439 63 = /dev/ttyCH63 AT/PCI-Fast board 3, port 15
2441 165 char Chase Research AT/PCI-Fast serial card - alternate devices
2442 0 = /dev/cuch0 Callout device for ttyCH0
2443 ...
2444 63 = /dev/cuch63 Callout device for ttyCH63
2446 166 char ACM USB modems
2447 0 = /dev/ttyACM0 First ACM modem
2448 1 = /dev/ttyACM1 Second ACM modem
2449 ...
2451 167 char ACM USB modems - alternate devices
2452 0 = /dev/cuacm0 Callout device for ttyACM0
2453 1 = /dev/cuacm1 Callout device for ttyACM1
2454 ...
2456 168 char Eracom CSA7000 PCI encryption adaptor
2457 0 = /dev/ecsa0 First CSA7000
2458 1 = /dev/ecsa1 Second CSA7000
2459 ...
2461 169 char Eracom CSA8000 PCI encryption adaptor
2462 0 = /dev/ecsa8-0 First CSA8000
2463 1 = /dev/ecsa8-1 Second CSA8000
2464 ...
2466 170 char AMI MegaRAC remote access controller
2467 0 = /dev/megarac0 First MegaRAC card
2468 1 = /dev/megarac1 Second MegaRAC card
2469 ...
2471 171 char Reserved for IEEE 1394 (Firewire)
2473 172 char Moxa Intellio serial card
2474 0 = /dev/ttyMX0 First Moxa port
2475 1 = /dev/ttyMX1 Second Moxa port
2476 ...
2477 127 = /dev/ttyMX127 128th Moxa port
2478 128 = /dev/moxactl Moxa control port
2480 173 char Moxa Intellio serial card - alternate devices
2481 0 = /dev/cumx0 Callout device for ttyMX0
2482 1 = /dev/cumx1 Callout device for ttyMX1
2483 ...
2484 127 = /dev/cumx127 Callout device for ttyMX127
2486 174 char SmartIO serial card
2487 0 = /dev/ttySI0 First SmartIO port
2488 1 = /dev/ttySI1 Second SmartIO port
2489 ...
2491 175 char SmartIO serial card - alternate devices
2492 0 = /dev/cusi0 Callout device for ttySI0
2493 1 = /dev/cusi1 Callout device for ttySI1
2494 ...
2496 176 char nCipher nFast PCI crypto accelerator
2497 0 = /dev/nfastpci0 First nFast PCI device
2498 1 = /dev/nfastpci1 First nFast PCI device
2499 ...
2501 177 char TI PCILynx memory spaces
2502 0 = /dev/pcilynx/aux0 AUX space of first PCILynx card
2503 ...
2504 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
2505 16 = /dev/pcilynx/rom0 ROM space of first PCILynx card
2506 ...
2507 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
2508 32 = /dev/pcilynx/ram0 RAM space of first PCILynx card
2509 ...
2510 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
2512 178 char Giganet cLAN1xxx virtual interface adapter
2513 0 = /dev/clanvi0 First cLAN adapter
2514 1 = /dev/clanvi1 Second cLAN adapter
2515 ...
2517 179 block MMC block devices
2518 0 = /dev/mmcblk0 First SD/MMC card
2519 1 = /dev/mmcblk0p1 First partition on first MMC card
2520 8 = /dev/mmcblk1 Second SD/MMC card
2521 ...
2523 The start of next SD/MMC card can be configured with
2524 CONFIG_MMC_BLOCK_MINORS, or overridden at boot/modprobe
2525 time using the mmcblk.perdev_minors option. That would
2526 bump the offset between each card to be the configured
2527 value instead of the default 8.
2529 179 char CCube DVXChip-based PCI products
2530 0 = /dev/dvxirq0 First DVX device
2531 1 = /dev/dvxirq1 Second DVX device
2532 ...
2534 180 char USB devices
2535 0 = /dev/usb/lp0 First USB printer
2536 ...
2537 15 = /dev/usb/lp15 16th USB printer
2538 48 = /dev/usb/scanner0 First USB scanner
2539 ...
2540 63 = /dev/usb/scanner15 16th USB scanner
2541 64 = /dev/usb/rio500 Diamond Rio 500
2542 65 = /dev/usb/usblcd USBLCD Interface (info@usblcd.de)
2543 66 = /dev/usb/cpad0 Synaptics cPad (mouse/LCD)
2544 96 = /dev/usb/hiddev0 1st USB HID device
2545 ...
2546 111 = /dev/usb/hiddev15 16th USB HID device
2547 112 = /dev/usb/auer0 1st auerswald ISDN device
2548 ...
2549 127 = /dev/usb/auer15 16th auerswald ISDN device
2550 128 = /dev/usb/brlvgr0 First Braille Voyager device
2551 ...
2552 131 = /dev/usb/brlvgr3 Fourth Braille Voyager device
2553 132 = /dev/usb/idmouse ID Mouse (fingerprint scanner) device
2554 133 = /dev/usb/sisusbvga1 First SiSUSB VGA device
2555 ...
2556 140 = /dev/usb/sisusbvga8 Eighth SISUSB VGA device
2557 144 = /dev/usb/lcd USB LCD device
2558 160 = /dev/usb/legousbtower0 1st USB Legotower device
2559 ...
2560 175 = /dev/usb/legousbtower15 16th USB Legotower device
2561 176 = /dev/usb/usbtmc1 First USB TMC device
2562 ...
2563 191 = /dev/usb/usbtmc16 16th USB TMC device
2564 192 = /dev/usb/yurex1 First USB Yurex device
2565 ...
2566 209 = /dev/usb/yurex16 16th USB Yurex device
2567 240 = /dev/usb/dabusb0 First daubusb device
2568 ...
2569 243 = /dev/usb/dabusb3 Fourth dabusb device
2571 180 block USB block devices
2572 0 = /dev/uba First USB block device
2573 8 = /dev/ubb Second USB block device
2574 16 = /dev/ubc Third USB block device
2575 ...
2577 181 char Conrad Electronic parallel port radio clocks
2578 0 = /dev/pcfclock0 First Conrad radio clock
2579 1 = /dev/pcfclock1 Second Conrad radio clock
2580 ...
2582 182 char Picture Elements THR2 binarizer
2583 0 = /dev/pethr0 First THR2 board
2584 1 = /dev/pethr1 Second THR2 board
2585 ...
2587 183 char SST 5136-DN DeviceNet interface
2588 0 = /dev/ss5136dn0 First DeviceNet interface
2589 1 = /dev/ss5136dn1 Second DeviceNet interface
2590 ...
2592 This device used to be assigned to major number 144.
2593 It had to be moved due to an unfortunate conflict.
2595 184 char Picture Elements' video simulator/sender
2596 0 = /dev/pevss0 First sender board
2597 1 = /dev/pevss1 Second sender board
2598 ...
2600 185 char InterMezzo high availability file system
2601 0 = /dev/intermezzo0 First cache manager
2602 1 = /dev/intermezzo1 Second cache manager
2603 ...
2605 See http://web.archive.org/web/20080115195241/
2606 http://inter-mezzo.org/index.html
2608 186 char Object-based storage control device
2609 0 = /dev/obd0 First obd control device
2610 1 = /dev/obd1 Second obd control device
2611 ...
2613 See ftp://ftp.lustre.org/pub/obd for code and information.
2615 187 char DESkey hardware encryption device
2616 0 = /dev/deskey0 First DES key
2617 1 = /dev/deskey1 Second DES key
2618 ...
2620 188 char USB serial converters
2621 0 = /dev/ttyUSB0 First USB serial converter
2622 1 = /dev/ttyUSB1 Second USB serial converter
2623 ...
2625 189 char USB serial converters - alternate devices
2626 0 = /dev/cuusb0 Callout device for ttyUSB0
2627 1 = /dev/cuusb1 Callout device for ttyUSB1
2628 ...
2630 190 char Kansas City tracker/tuner card
2631 0 = /dev/kctt0 First KCT/T card
2632 1 = /dev/kctt1 Second KCT/T card
2633 ...
2635 191 char Reserved for PCMCIA
2637 192 char Kernel profiling interface
2638 0 = /dev/profile Profiling control device
2639 1 = /dev/profile0 Profiling device for CPU 0
2640 2 = /dev/profile1 Profiling device for CPU 1
2641 ...
2643 193 char Kernel event-tracing interface
2644 0 = /dev/trace Tracing control device
2645 1 = /dev/trace0 Tracing device for CPU 0
2646 2 = /dev/trace1 Tracing device for CPU 1
2647 ...
2649 194 char linVideoStreams (LINVS)
2650 0 = /dev/mvideo/status0 Video compression status
2651 1 = /dev/mvideo/stream0 Video stream
2652 2 = /dev/mvideo/frame0 Single compressed frame
2653 3 = /dev/mvideo/rawframe0 Raw uncompressed frame
2654 4 = /dev/mvideo/codec0 Direct codec access
2655 5 = /dev/mvideo/video4linux0 Video4Linux compatibility
2657 16 = /dev/mvideo/status1 Second device
2658 ...
2659 32 = /dev/mvideo/status2 Third device
2660 ...
2661 ...
2662 240 = /dev/mvideo/status15 16th device
2663 ...
2665 195 char Nvidia graphics devices
2666 0 = /dev/nvidia0 First Nvidia card
2667 1 = /dev/nvidia1 Second Nvidia card
2668 ...
2669 255 = /dev/nvidiactl Nvidia card control device
2671 196 char Tormenta T1 card
2672 0 = /dev/tor/0 Master control channel for all cards
2673 1 = /dev/tor/1 First DS0
2674 2 = /dev/tor/2 Second DS0
2675 ...
2676 48 = /dev/tor/48 48th DS0
2677 49 = /dev/tor/49 First pseudo-channel
2678 50 = /dev/tor/50 Second pseudo-channel
2679 ...
2681 197 char OpenTNF tracing facility
2682 0 = /dev/tnf/t0 Trace 0 data extraction
2683 1 = /dev/tnf/t1 Trace 1 data extraction
2684 ...
2685 128 = /dev/tnf/status Tracing facility status
2686 130 = /dev/tnf/trace Tracing device
2688 198 char Total Impact TPMP2 quad coprocessor PCI card
2689 0 = /dev/tpmp2/0 First card
2690 1 = /dev/tpmp2/1 Second card
2691 ...
2693 199 char Veritas volume manager (VxVM) volumes
2694 0 = /dev/vx/rdsk/*/* First volume
2695 1 = /dev/vx/rdsk/*/* Second volume
2696 ...
2698 199 block Veritas volume manager (VxVM) volumes
2699 0 = /dev/vx/dsk/*/* First volume
2700 1 = /dev/vx/dsk/*/* Second volume
2701 ...
2703 The namespace in these directories is maintained by
2704 the user space VxVM software.
2706 200 char Veritas VxVM configuration interface
2707 0 = /dev/vx/config Configuration access node
2708 1 = /dev/vx/trace Volume i/o trace access node
2709 2 = /dev/vx/iod Volume i/o daemon access node
2710 3 = /dev/vx/info Volume information access node
2711 4 = /dev/vx/task Volume tasks access node
2712 5 = /dev/vx/taskmon Volume tasks monitor daemon
2714 201 char Veritas VxVM dynamic multipathing driver
2715 0 = /dev/vx/rdmp/* First multipath device
2716 1 = /dev/vx/rdmp/* Second multipath device
2717 ...
2718 201 block Veritas VxVM dynamic multipathing driver
2719 0 = /dev/vx/dmp/* First multipath device
2720 1 = /dev/vx/dmp/* Second multipath device
2721 ...
2723 The namespace in these directories is maintained by
2724 the user space VxVM software.
2726 202 char CPU model-specific registers
2727 0 = /dev/cpu/0/msr MSRs on CPU 0
2728 1 = /dev/cpu/1/msr MSRs on CPU 1
2729 ...
2731 202 block Xen Virtual Block Device
2732 0 = /dev/xvda First Xen VBD whole disk
2733 16 = /dev/xvdb Second Xen VBD whole disk
2734 32 = /dev/xvdc Third Xen VBD whole disk
2735 ...
2736 240 = /dev/xvdp Sixteenth Xen VBD whole disk
2738 Partitions are handled in the same way as for IDE
2739 disks (see major number 3) except that the limit on
2740 partitions is 15.
2742 203 char CPU CPUID information
2743 0 = /dev/cpu/0/cpuid CPUID on CPU 0
2744 1 = /dev/cpu/1/cpuid CPUID on CPU 1
2745 ...
2747 204 char Low-density serial ports
2748 0 = /dev/ttyLU0 LinkUp Systems L72xx UART - port 0
2749 1 = /dev/ttyLU1 LinkUp Systems L72xx UART - port 1
2750 2 = /dev/ttyLU2 LinkUp Systems L72xx UART - port 2
2751 3 = /dev/ttyLU3 LinkUp Systems L72xx UART - port 3
2752 4 = /dev/ttyFB0 Intel Footbridge (ARM)
2753 5 = /dev/ttySA0 StrongARM builtin serial port 0
2754 6 = /dev/ttySA1 StrongARM builtin serial port 1
2755 7 = /dev/ttySA2 StrongARM builtin serial port 2
2756 8 = /dev/ttySC0 SCI serial port (SuperH) - port 0
2757 9 = /dev/ttySC1 SCI serial port (SuperH) - port 1
2758 10 = /dev/ttySC2 SCI serial port (SuperH) - port 2
2759 11 = /dev/ttySC3 SCI serial port (SuperH) - port 3
2760 12 = /dev/ttyFW0 Firmware console - port 0
2761 13 = /dev/ttyFW1 Firmware console - port 1
2762 14 = /dev/ttyFW2 Firmware console - port 2
2763 15 = /dev/ttyFW3 Firmware console - port 3
2764 16 = /dev/ttyAM0 ARM "AMBA" serial port 0
2765 ...
2766 31 = /dev/ttyAM15 ARM "AMBA" serial port 15
2767 32 = /dev/ttyDB0 DataBooster serial port 0
2768 ...
2769 39 = /dev/ttyDB7 DataBooster serial port 7
2770 40 = /dev/ttySG0 SGI Altix console port
2771 41 = /dev/ttySMX0 Motorola i.MX - port 0
2772 42 = /dev/ttySMX1 Motorola i.MX - port 1
2773 43 = /dev/ttySMX2 Motorola i.MX - port 2
2774 44 = /dev/ttyMM0 Marvell MPSC - port 0
2775 45 = /dev/ttyMM1 Marvell MPSC - port 1
2776 46 = /dev/ttyCPM0 PPC CPM (SCC or SMC) - port 0
2777 ...
2778 47 = /dev/ttyCPM5 PPC CPM (SCC or SMC) - port 5
2779 50 = /dev/ttyIOC0 Altix serial card
2780 ...
2781 81 = /dev/ttyIOC31 Altix serial card
2782 82 = /dev/ttyVR0 NEC VR4100 series SIU
2783 83 = /dev/ttyVR1 NEC VR4100 series DSIU
2784 84 = /dev/ttyIOC84 Altix ioc4 serial card
2785 ...
2786 115 = /dev/ttyIOC115 Altix ioc4 serial card
2787 116 = /dev/ttySIOC0 Altix ioc3 serial card
2788 ...
2789 147 = /dev/ttySIOC31 Altix ioc3 serial card
2790 148 = /dev/ttyPSC0 PPC PSC - port 0
2791 ...
2792 153 = /dev/ttyPSC5 PPC PSC - port 5
2793 154 = /dev/ttyAT0 ATMEL serial port 0
2794 ...
2795 169 = /dev/ttyAT15 ATMEL serial port 15
2796 170 = /dev/ttyNX0 Hilscher netX serial port 0
2797 ...
2798 185 = /dev/ttyNX15 Hilscher netX serial port 15
2799 186 = /dev/ttyJ0 JTAG1 DCC protocol based serial port emulation
2800 187 = /dev/ttyUL0 Xilinx uartlite - port 0
2801 ...
2802 190 = /dev/ttyUL3 Xilinx uartlite - port 3
2803 191 = /dev/xvc0 Xen virtual console - port 0
2804 192 = /dev/ttyPZ0 pmac_zilog - port 0
2805 ...
2806 195 = /dev/ttyPZ3 pmac_zilog - port 3
2807 196 = /dev/ttyTX0 TX39/49 serial port 0
2808 ...
2809 204 = /dev/ttyTX7 TX39/49 serial port 7
2810 205 = /dev/ttySC0 SC26xx serial port 0
2811 206 = /dev/ttySC1 SC26xx serial port 1
2812 207 = /dev/ttySC2 SC26xx serial port 2
2813 208 = /dev/ttySC3 SC26xx serial port 3
2814 209 = /dev/ttyMAX0 MAX3100 serial port 0
2815 210 = /dev/ttyMAX1 MAX3100 serial port 1
2816 211 = /dev/ttyMAX2 MAX3100 serial port 2
2817 212 = /dev/ttyMAX3 MAX3100 serial port 3
2819 205 char Low-density serial ports (alternate device)
2820 0 = /dev/culu0 Callout device for ttyLU0
2821 1 = /dev/culu1 Callout device for ttyLU1
2822 2 = /dev/culu2 Callout device for ttyLU2
2823 3 = /dev/culu3 Callout device for ttyLU3
2824 4 = /dev/cufb0 Callout device for ttyFB0
2825 5 = /dev/cusa0 Callout device for ttySA0
2826 6 = /dev/cusa1 Callout device for ttySA1
2827 7 = /dev/cusa2 Callout device for ttySA2
2828 8 = /dev/cusc0 Callout device for ttySC0
2829 9 = /dev/cusc1 Callout device for ttySC1
2830 10 = /dev/cusc2 Callout device for ttySC2
2831 11 = /dev/cusc3 Callout device for ttySC3
2832 12 = /dev/cufw0 Callout device for ttyFW0
2833 13 = /dev/cufw1 Callout device for ttyFW1
2834 14 = /dev/cufw2 Callout device for ttyFW2
2835 15 = /dev/cufw3 Callout device for ttyFW3
2836 16 = /dev/cuam0 Callout device for ttyAM0
2837 ...
2838 31 = /dev/cuam15 Callout device for ttyAM15
2839 32 = /dev/cudb0 Callout device for ttyDB0
2840 ...
2841 39 = /dev/cudb7 Callout device for ttyDB7
2842 40 = /dev/cusg0 Callout device for ttySG0
2843 41 = /dev/ttycusmx0 Callout device for ttySMX0
2844 42 = /dev/ttycusmx1 Callout device for ttySMX1
2845 43 = /dev/ttycusmx2 Callout device for ttySMX2
2846 46 = /dev/cucpm0 Callout device for ttyCPM0
2847 ...
2848 49 = /dev/cucpm5 Callout device for ttyCPM5
2849 50 = /dev/cuioc40 Callout device for ttyIOC40
2850 ...
2851 81 = /dev/cuioc431 Callout device for ttyIOC431
2852 82 = /dev/cuvr0 Callout device for ttyVR0
2853 83 = /dev/cuvr1 Callout device for ttyVR1
2855 206 char OnStream SC-x0 tape devices
2856 0 = /dev/osst0 First OnStream SCSI tape, mode 0
2857 1 = /dev/osst1 Second OnStream SCSI tape, mode 0
2858 ...
2859 32 = /dev/osst0l First OnStream SCSI tape, mode 1
2860 33 = /dev/osst1l Second OnStream SCSI tape, mode 1
2861 ...
2862 64 = /dev/osst0m First OnStream SCSI tape, mode 2
2863 65 = /dev/osst1m Second OnStream SCSI tape, mode 2
2864 ...
2865 96 = /dev/osst0a First OnStream SCSI tape, mode 3
2866 97 = /dev/osst1a Second OnStream SCSI tape, mode 3
2867 ...
2868 128 = /dev/nosst0 No rewind version of /dev/osst0
2869 129 = /dev/nosst1 No rewind version of /dev/osst1
2870 ...
2871 160 = /dev/nosst0l No rewind version of /dev/osst0l
2872 161 = /dev/nosst1l No rewind version of /dev/osst1l
2873 ...
2874 192 = /dev/nosst0m No rewind version of /dev/osst0m
2875 193 = /dev/nosst1m No rewind version of /dev/osst1m
2876 ...
2877 224 = /dev/nosst0a No rewind version of /dev/osst0a
2878 225 = /dev/nosst1a No rewind version of /dev/osst1a
2879 ...
2881 The OnStream SC-x0 SCSI tapes do not support the
2882 standard SCSI SASD command set and therefore need
2883 their own driver "osst". Note that the IDE, USB (and
2884 maybe ParPort) versions may be driven via ide-scsi or
2885 usb-storage SCSI emulation and this osst device and
2886 driver as well. The ADR-x0 drives are QIC-157
2887 compliant and don't need osst.
2889 207 char Compaq ProLiant health feature indicate
2890 0 = /dev/cpqhealth/cpqw Redirector interface
2891 1 = /dev/cpqhealth/crom EISA CROM
2892 2 = /dev/cpqhealth/cdt Data Table
2893 3 = /dev/cpqhealth/cevt Event Log
2894 4 = /dev/cpqhealth/casr Automatic Server Recovery
2895 5 = /dev/cpqhealth/cecc ECC Memory
2896 6 = /dev/cpqhealth/cmca Machine Check Architecture
2897 7 = /dev/cpqhealth/ccsm Deprecated CDT
2898 8 = /dev/cpqhealth/cnmi NMI Handling
2899 9 = /dev/cpqhealth/css Sideshow Management
2900 10 = /dev/cpqhealth/cram CMOS interface
2901 11 = /dev/cpqhealth/cpci PCI IRQ interface
2903 208 char User space serial ports
2904 0 = /dev/ttyU0 First user space serial port
2905 1 = /dev/ttyU1 Second user space serial port
2906 ...
2908 209 char User space serial ports (alternate devices)
2909 0 = /dev/cuu0 Callout device for ttyU0
2910 1 = /dev/cuu1 Callout device for ttyU1
2911 ...
2913 210 char SBE, Inc. sync/async serial card
2914 0 = /dev/sbei/wxcfg0 Configuration device for board 0
2915 1 = /dev/sbei/dld0 Download device for board 0
2916 2 = /dev/sbei/wan00 WAN device, port 0, board 0
2917 3 = /dev/sbei/wan01 WAN device, port 1, board 0
2918 4 = /dev/sbei/wan02 WAN device, port 2, board 0
2919 5 = /dev/sbei/wan03 WAN device, port 3, board 0
2920 6 = /dev/sbei/wanc00 WAN clone device, port 0, board 0
2921 7 = /dev/sbei/wanc01 WAN clone device, port 1, board 0
2922 8 = /dev/sbei/wanc02 WAN clone device, port 2, board 0
2923 9 = /dev/sbei/wanc03 WAN clone device, port 3, board 0
2924 10 = /dev/sbei/wxcfg1 Configuration device for board 1
2925 11 = /dev/sbei/dld1 Download device for board 1
2926 12 = /dev/sbei/wan10 WAN device, port 0, board 1
2927 13 = /dev/sbei/wan11 WAN device, port 1, board 1
2928 14 = /dev/sbei/wan12 WAN device, port 2, board 1
2929 15 = /dev/sbei/wan13 WAN device, port 3, board 1
2930 16 = /dev/sbei/wanc10 WAN clone device, port 0, board 1
2931 17 = /dev/sbei/wanc11 WAN clone device, port 1, board 1
2932 18 = /dev/sbei/wanc12 WAN clone device, port 2, board 1
2933 19 = /dev/sbei/wanc13 WAN clone device, port 3, board 1
2934 ...
2936 Yes, each board is really spaced 10 (decimal) apart.
2938 211 char Addinum CPCI1500 digital I/O card
2939 0 = /dev/addinum/cpci1500/0 First CPCI1500 card
2940 1 = /dev/addinum/cpci1500/1 Second CPCI1500 card
2941 ...
2943 212 char LinuxTV.org DVB driver subsystem
2944 0 = /dev/dvb/adapter0/video0 first video decoder of first card
2945 1 = /dev/dvb/adapter0/audio0 first audio decoder of first card
2946 2 = /dev/dvb/adapter0/sec0 (obsolete/unused)
2947 3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2948 4 = /dev/dvb/adapter0/demux0 first demux device of first card
2949 5 = /dev/dvb/adapter0/dvr0 first digital video recoder device of first card
2950 6 = /dev/dvb/adapter0/ca0 first common access port of first card
2951 7 = /dev/dvb/adapter0/net0 first network device of first card
2952 8 = /dev/dvb/adapter0/osd0 first on-screen-display device of first card
2953 9 = /dev/dvb/adapter0/video1 second video decoder of first card
2954 ...
2955 64 = /dev/dvb/adapter1/video0 first video decoder of second card
2956 ...
2957 128 = /dev/dvb/adapter2/video0 first video decoder of third card
2958 ...
2959 196 = /dev/dvb/adapter3/video0 first video decoder of fourth card
2961 216 char Bluetooth RFCOMM TTY devices
2962 0 = /dev/rfcomm0 First Bluetooth RFCOMM TTY device
2963 1 = /dev/rfcomm1 Second Bluetooth RFCOMM TTY device
2964 ...
2966 217 char Bluetooth RFCOMM TTY devices (alternate devices)
2967 0 = /dev/curf0 Callout device for rfcomm0
2968 1 = /dev/curf1 Callout device for rfcomm1
2969 ...
2971 218 char The Logical Company bus Unibus/Qbus adapters
2972 0 = /dev/logicalco/bci/0 First bus adapter
2973 1 = /dev/logicalco/bci/1 First bus adapter
2974 ...
2976 219 char The Logical Company DCI-1300 digital I/O card
2977 0 = /dev/logicalco/dci1300/0 First DCI-1300 card
2978 1 = /dev/logicalco/dci1300/1 Second DCI-1300 card
2979 ...
2981 220 char Myricom Myrinet "GM" board
2982 0 = /dev/myricom/gm0 First Myrinet GM board
2983 1 = /dev/myricom/gmp0 First board "root access"
2984 2 = /dev/myricom/gm1 Second Myrinet GM board
2985 3 = /dev/myricom/gmp1 Second board "root access"
2986 ...
2988 221 char VME bus
2989 0 = /dev/bus/vme/m0 First master image
2990 1 = /dev/bus/vme/m1 Second master image
2991 2 = /dev/bus/vme/m2 Third master image
2992 3 = /dev/bus/vme/m3 Fourth master image
2993 4 = /dev/bus/vme/s0 First slave image
2994 5 = /dev/bus/vme/s1 Second slave image
2995 6 = /dev/bus/vme/s2 Third slave image
2996 7 = /dev/bus/vme/s3 Fourth slave image
2997 8 = /dev/bus/vme/ctl Control
2999 It is expected that all VME bus drivers will use the
3000 same interface. For interface documentation see
3001 http://www.vmelinux.org/.
3003 224 char A2232 serial card
3004 0 = /dev/ttyY0 First A2232 port
3005 1 = /dev/ttyY1 Second A2232 port
3006 ...
3008 225 char A2232 serial card (alternate devices)
3009 0 = /dev/cuy0 Callout device for ttyY0
3010 1 = /dev/cuy1 Callout device for ttyY1
3011 ...
3013 226 char Direct Rendering Infrastructure (DRI)
3014 0 = /dev/dri/card0 First graphics card
3015 1 = /dev/dri/card1 Second graphics card
3016 ...
3018 227 char IBM 3270 terminal Unix tty access
3019 1 = /dev/3270/tty1 First 3270 terminal
3020 2 = /dev/3270/tty2 Seconds 3270 terminal
3021 ...
3023 228 char IBM 3270 terminal block-mode access
3024 0 = /dev/3270/tub Controlling interface
3025 1 = /dev/3270/tub1 First 3270 terminal
3026 2 = /dev/3270/tub2 Second 3270 terminal
3027 ...
3029 229 char IBM iSeries/pSeries virtual console
3030 0 = /dev/hvc0 First console port
3031 1 = /dev/hvc1 Second console port
3032 ...
3034 230 char IBM iSeries virtual tape
3035 0 = /dev/iseries/vt0 First virtual tape, mode 0
3036 1 = /dev/iseries/vt1 Second virtual tape, mode 0
3037 ...
3038 32 = /dev/iseries/vt0l First virtual tape, mode 1
3039 33 = /dev/iseries/vt1l Second virtual tape, mode 1
3040 ...
3041 64 = /dev/iseries/vt0m First virtual tape, mode 2
3042 65 = /dev/iseries/vt1m Second virtual tape, mode 2
3043 ...
3044 96 = /dev/iseries/vt0a First virtual tape, mode 3
3045 97 = /dev/iseries/vt1a Second virtual tape, mode 3
3046 ...
3047 128 = /dev/iseries/nvt0 First virtual tape, mode 0, no rewind
3048 129 = /dev/iseries/nvt1 Second virtual tape, mode 0, no rewind
3049 ...
3050 160 = /dev/iseries/nvt0l First virtual tape, mode 1, no rewind
3051 161 = /dev/iseries/nvt1l Second virtual tape, mode 1, no rewind
3052 ...
3053 192 = /dev/iseries/nvt0m First virtual tape, mode 2, no rewind
3054 193 = /dev/iseries/nvt1m Second virtual tape, mode 2, no rewind
3055 ...
3056 224 = /dev/iseries/nvt0a First virtual tape, mode 3, no rewind
3057 225 = /dev/iseries/nvt1a Second virtual tape, mode 3, no rewind
3058 ...
3060 "No rewind" refers to the omission of the default
3061 automatic rewind on device close. The MTREW or MTOFFL
3062 ioctl()'s can be used to rewind the tape regardless of
3063 the device used to access it.
3065 231 char InfiniBand
3066 0 = /dev/infiniband/umad0
3067 1 = /dev/infiniband/umad1
3068 ...
3069 63 = /dev/infiniband/umad63 63rd InfiniBandMad device
3070 64 = /dev/infiniband/issm0 First InfiniBand IsSM device
3071 65 = /dev/infiniband/issm1 Second InfiniBand IsSM device
3072 ...
3073 127 = /dev/infiniband/issm63 63rd InfiniBand IsSM device
3074 128 = /dev/infiniband/uverbs0 First InfiniBand verbs device
3075 129 = /dev/infiniband/uverbs1 Second InfiniBand verbs device
3076 ...
3077 159 = /dev/infiniband/uverbs31 31st InfiniBand verbs device
3079 232 char Biometric Devices
3080 0 = /dev/biometric/sensor0/fingerprint first fingerprint sensor on first device
3081 1 = /dev/biometric/sensor0/iris first iris sensor on first device
3082 2 = /dev/biometric/sensor0/retina first retina sensor on first device
3083 3 = /dev/biometric/sensor0/voiceprint first voiceprint sensor on first device
3084 4 = /dev/biometric/sensor0/facial first facial sensor on first device
3085 5 = /dev/biometric/sensor0/hand first hand sensor on first device
3086 ...
3087 10 = /dev/biometric/sensor1/fingerprint first fingerprint sensor on second device
3088 ...
3089 20 = /dev/biometric/sensor2/fingerprint first fingerprint sensor on third device
3090 ...
3092 233 char PathScale InfiniPath interconnect
3093 0 = /dev/ipath Primary device for programs (any unit)
3094 1 = /dev/ipath0 Access specifically to unit 0
3095 2 = /dev/ipath1 Access specifically to unit 1
3096 ...
3097 4 = /dev/ipath3 Access specifically to unit 3
3098 129 = /dev/ipath_sma Device used by Subnet Management Agent
3099 130 = /dev/ipath_diag Device used by diagnostics programs
3101 234-239 UNASSIGNED
3103 240-254 char LOCAL/EXPERIMENTAL USE
3105 240-254 block LOCAL/EXPERIMENTAL USE
3106 Allocated for local/experimental use. For devices not
3107 assigned official numbers, these ranges should be
3108 used in order to avoid conflicting with future assignments.
3110 255 char RESERVED
3112 255 block RESERVED
3114 This major is reserved to assist the expansion to a
3115 larger number space. No device nodes with this major
3116 should ever be created on the filesystem.
3117 (This is probably not true anymore, but I'll leave it
3118 for now /Torben)
3120 ---LARGE MAJORS!!!!!---
3122 256 char Equinox SST multi-port serial boards
3123 0 = /dev/ttyEQ0 First serial port on first Equinox SST board
3124 127 = /dev/ttyEQ127 Last serial port on first Equinox SST board
3125 128 = /dev/ttyEQ128 First serial port on second Equinox SST board
3126 ...
3127 1027 = /dev/ttyEQ1027 Last serial port on eighth Equinox SST board
3129 256 block Resident Flash Disk Flash Translation Layer
3130 0 = /dev/rfda First RFD FTL layer
3131 16 = /dev/rfdb Second RFD FTL layer
3132 ...
3133 240 = /dev/rfdp 16th RFD FTL layer
3135 257 char Phoenix Technologies Cryptographic Services Driver
3136 0 = /dev/ptlsec Crypto Services Driver
3138 257 block SSFDC Flash Translation Layer filesystem
3139 0 = /dev/ssfdca First SSFDC layer
3140 8 = /dev/ssfdcb Second SSFDC layer
3141 16 = /dev/ssfdcc Third SSFDC layer
3142 24 = /dev/ssfdcd 4th SSFDC layer
3143 32 = /dev/ssfdce 5th SSFDC layer
3144 40 = /dev/ssfdcf 6th SSFDC layer
3145 48 = /dev/ssfdcg 7th SSFDC layer
3146 56 = /dev/ssfdch 8th SSFDC layer
3148 258 block ROM/Flash read-only translation layer
3149 0 = /dev/blockrom0 First ROM card's translation layer interface
3150 1 = /dev/blockrom1 Second ROM card's translation layer interface
3151 ...
3153 259 block Block Extended Major
3154 Used dynamically to hold additional partition minor
3155 numbers and allow large numbers of partitions per device
3157 259 char FPGA configuration interfaces
3158 0 = /dev/icap0 First Xilinx internal configuration
3159 1 = /dev/icap1 Second Xilinx internal configuration
3161 260 char OSD (Object-based-device) SCSI Device
3162 0 = /dev/osd0 First OSD Device
3163 1 = /dev/osd1 Second OSD Device
3164 ...
3165 255 = /dev/osd255 256th OSD Device
3167 **** ADDITIONAL /dev DIRECTORY ENTRIES
3169 This section details additional entries that should or may exist in
3170 the /dev directory. It is preferred that symbolic links use the same
3171 form (absolute or relative) as is indicated here. Links are
3172 classified as "hard" or "symbolic" depending on the preferred type of
3173 link; if possible, the indicated type of link should be used.
3176 Compulsory links
3178 These links should exist on all systems:
3180 /dev/fd /proc/self/fd symbolic File descriptors
3181 /dev/stdin fd/0 symbolic stdin file descriptor
3182 /dev/stdout fd/1 symbolic stdout file descriptor
3183 /dev/stderr fd/2 symbolic stderr file descriptor
3184 /dev/nfsd socksys symbolic Required by iBCS-2
3185 /dev/X0R null symbolic Required by iBCS-2
3187 Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
3189 Recommended links
3191 It is recommended that these links exist on all systems:
3193 /dev/core /proc/kcore symbolic Backward compatibility
3194 /dev/ramdisk ram0 symbolic Backward compatibility
3195 /dev/ftape qft0 symbolic Backward compatibility
3196 /dev/bttv0 video0 symbolic Backward compatibility
3197 /dev/radio radio0 symbolic Backward compatibility
3198 /dev/i2o* /dev/i2o/* symbolic Backward compatibility
3199 /dev/scd? sr? hard Alternate SCSI CD-ROM name
3201 Locally defined links
3203 The following links may be established locally to conform to the
3204 configuration of the system. This is merely a tabulation of existing
3205 practice, and does not constitute a recommendation. However, if they
3206 exist, they should have the following uses.
3208 /dev/mouse mouse port symbolic Current mouse device
3209 /dev/tape tape device symbolic Current tape device
3210 /dev/cdrom CD-ROM device symbolic Current CD-ROM device
3211 /dev/cdwriter CD-writer symbolic Current CD-writer device
3212 /dev/scanner scanner symbolic Current scanner device
3213 /dev/modem modem port symbolic Current dialout device
3214 /dev/root root device symbolic Current root filesystem
3215 /dev/swap swap device symbolic Current swap device
3217 /dev/modem should not be used for a modem which supports dialin as
3218 well as dialout, as it tends to cause lock file problems. If it
3219 exists, /dev/modem should point to the appropriate primary TTY device
3220 (the use of the alternate callout devices is deprecated).
3222 For SCSI devices, /dev/tape and /dev/cdrom should point to the
3223 ``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
3224 /dev/cdwriter and /dev/scanner should point to the appropriate generic
3225 SCSI devices (/dev/sg*).
3227 /dev/mouse may point to a primary serial TTY device, a hardware mouse
3228 device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
3230 Sockets and pipes
3232 Non-transient sockets and named pipes may exist in /dev. Common entries are:
3234 /dev/printer socket lpd local socket
3235 /dev/log socket syslog local socket
3236 /dev/gpmdata socket gpm mouse multiplexer
3238 Mount points
3240 The following names are reserved for mounting special filesystems
3241 under /dev. These special filesystems provide kernel interfaces that
3242 cannot be provided with standard device nodes.
3244 /dev/pts devpts PTY slave filesystem
3245 /dev/shm tmpfs POSIX shared memory maintenance access
3247 **** TERMINAL DEVICES
3249 Terminal, or TTY devices are a special class of character devices. A
3250 terminal device is any device that could act as a controlling terminal
3251 for a session; this includes virtual consoles, serial ports, and
3252 pseudoterminals (PTYs).
3254 All terminal devices share a common set of capabilities known as line
3255 disciplines; these include the common terminal line discipline as well
3256 as SLIP and PPP modes.
3258 All terminal devices are named similarly; this section explains the
3259 naming and use of the various types of TTYs. Note that the naming
3260 conventions include several historical warts; some of these are
3261 Linux-specific, some were inherited from other systems, and some
3262 reflect Linux outgrowing a borrowed convention.
3264 A hash mark (#) in a device name is used here to indicate a decimal
3265 number without leading zeroes.
3267 Virtual consoles and the console device
3269 Virtual consoles are full-screen terminal displays on the system video
3270 monitor. Virtual consoles are named /dev/tty#, with numbering
3271 starting at /dev/tty1; /dev/tty0 is the current virtual console.
3272 /dev/tty0 is the device that should be used to access the system video
3273 card on those architectures for which the frame buffer devices
3274 (/dev/fb*) are not applicable. Do not use /dev/console
3275 for this purpose.
3277 The console device, /dev/console, is the device to which system
3278 messages should be sent, and on which logins should be permitted in
3279 single-user mode. Starting with Linux 2.1.71, /dev/console is managed
3280 by the kernel; for previous versions it should be a symbolic link to
3281 either /dev/tty0, a specific virtual console such as /dev/tty1, or to
3282 a serial port primary (tty*, not cu*) device, depending on the
3283 configuration of the system.
3285 Serial ports
3287 Serial ports are RS-232 serial ports and any device which simulates
3288 one, either in hardware (such as internal modems) or in software (such
3289 as the ISDN driver.) Under Linux, each serial ports has two device
3290 names, the primary or callin device and the alternate or callout one.
3291 Each kind of device is indicated by a different letter. For any
3292 letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
3293 respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
3294 correspond to /dev/cua# and /dev/cub#. In the future, it should be
3295 expected that multiple letters will be used; all letters will be upper
3296 case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
3297 "cu" device (e.g. /dev/cudp#).
3299 The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
3301 The alternate devices provide for kernel-based exclusion and somewhat
3302 different defaults than the primary devices. Their main purpose is to
3303 allow the use of serial ports with programs with no inherent or broken
3304 support for serial ports. Their use is deprecated, and they may be
3305 removed from a future version of Linux.
3307 Arbitration of serial ports is provided by the use of lock files with
3308 the names /var/lock/LCK..ttyX#. The contents of the lock file should
3309 be the PID of the locking process as an ASCII number.
3311 It is common practice to install links such as /dev/modem
3312 which point to serial ports. In order to ensure proper locking in the
3313 presence of these links, it is recommended that software chase
3314 symlinks and lock all possible names; additionally, it is recommended
3315 that a lock file be installed with the corresponding alternate
3316 device. In order to avoid deadlocks, it is recommended that the locks
3317 are acquired in the following order, and released in the reverse:
3319 1. The symbolic link name, if any (/var/lock/LCK..modem)
3320 2. The "tty" name (/var/lock/LCK..ttyS2)
3321 3. The alternate device name (/var/lock/LCK..cua2)
3323 In the case of nested symbolic links, the lock files should be
3324 installed in the order the symlinks are resolved.
3326 Under no circumstances should an application hold a lock while waiting
3327 for another to be released. In addition, applications which attempt
3328 to create lock files for the corresponding alternate device names
3329 should take into account the possibility of being used on a non-serial
3330 port TTY, for which no alternate device would exist.
3332 Pseudoterminals (PTYs)
3334 Pseudoterminals, or PTYs, are used to create login sessions or provide
3335 other capabilities requiring a TTY line discipline (including SLIP or
3336 PPP capability) to arbitrary data-generation processes. Each PTY has
3337 a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
3338 /dev/tty[p-za-e][0-9a-f]. The kernel arbitrates the use of PTYs by
3339 allowing each master side to be opened only once.
3341 Once the master side has been opened, the corresponding slave device
3342 can be used in the same manner as any TTY device. The master and
3343 slave devices are connected by the kernel, generating the equivalent
3344 of a bidirectional pipe with TTY capabilities.
3346 Recent versions of the Linux kernels and GNU libc contain support for
3347 the System V/Unix98 naming scheme for PTYs, which assigns a common
3348 device, /dev/ptmx, to all the masters (opening it will automatically
3349 give you a previously unassigned PTY) and a subdirectory, /dev/pts,
3350 for the slaves; the slaves are named with decimal integers (/dev/pts/#
3351 in our notation). This removes the problem of exhausting the
3352 namespace and enables the kernel to automatically create the device
3353 nodes for the slaves on demand using the "devpts" filesystem.