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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17 The LaTeX version of this document is no longer maintained.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26 The symbol {2.6} means the allocation is obsolete and scheduled for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
450 240-254 Reserved for local use
451 255 Reserved for MISC_DYNAMIC_MINOR
453 11 char Raw keyboard device (Linux/SPARC only)
454 0 = /dev/kbd Raw keyboard device
456 11 char Serial Mux device (Linux/PA-RISC only)
457 0 = /dev/ttyB0 First mux port
458 1 = /dev/ttyB1 Second mux port
459 ...
461 11 block SCSI CD-ROM devices
462 0 = /dev/scd0 First SCSI CD-ROM
463 1 = /dev/scd1 Second SCSI CD-ROM
464 ...
466 The prefix /dev/sr (instead of /dev/scd) has been deprecated.
468 12 char QIC-02 tape
469 2 = /dev/ntpqic11 QIC-11, no rewind-on-close
470 3 = /dev/tpqic11 QIC-11, rewind-on-close
471 4 = /dev/ntpqic24 QIC-24, no rewind-on-close
472 5 = /dev/tpqic24 QIC-24, rewind-on-close
473 6 = /dev/ntpqic120 QIC-120, no rewind-on-close
474 7 = /dev/tpqic120 QIC-120, rewind-on-close
475 8 = /dev/ntpqic150 QIC-150, no rewind-on-close
476 9 = /dev/tpqic150 QIC-150, rewind-on-close
478 The device names specified are proposed -- if there
479 are "standard" names for these devices, please let me know.
481 12 block
483 13 char Input core
484 0 = /dev/input/js0 First joystick
485 1 = /dev/input/js1 Second joystick
486 ...
487 32 = /dev/input/mouse0 First mouse
488 33 = /dev/input/mouse1 Second mouse
489 ...
490 63 = /dev/input/mice Unified mouse
491 64 = /dev/input/event0 First event queue
492 65 = /dev/input/event1 Second event queue
493 ...
495 Each device type has 5 bits (32 minors).
497 13 block 8-bit MFM/RLL/IDE controller
498 0 = /dev/xda First XT disk whole disk
499 64 = /dev/xdb Second XT disk whole disk
501 Partitions are handled in the same way as IDE disks
502 (see major number 3).
504 14 char Open Sound System (OSS)
505 0 = /dev/mixer Mixer control
506 1 = /dev/sequencer Audio sequencer
507 2 = /dev/midi00 First MIDI port
508 3 = /dev/dsp Digital audio
509 4 = /dev/audio Sun-compatible digital audio
510 6 =
511 7 = /dev/audioctl SPARC audio control device
512 8 = /dev/sequencer2 Sequencer -- alternate device
513 16 = /dev/mixer1 Second soundcard mixer control
514 17 = /dev/patmgr0 Sequencer patch manager
515 18 = /dev/midi01 Second MIDI port
516 19 = /dev/dsp1 Second soundcard digital audio
517 20 = /dev/audio1 Second soundcard Sun digital audio
518 33 = /dev/patmgr1 Sequencer patch manager
519 34 = /dev/midi02 Third MIDI port
520 50 = /dev/midi03 Fourth MIDI port
522 14 block
524 15 char Joystick
525 0 = /dev/js0 First analog joystick
526 1 = /dev/js1 Second analog joystick
527 ...
528 128 = /dev/djs0 First digital joystick
529 129 = /dev/djs1 Second digital joystick
530 ...
531 15 block Sony CDU-31A/CDU-33A CD-ROM
532 0 = /dev/sonycd Sony CDU-31a CD-ROM
534 16 char Non-SCSI scanners
535 0 = /dev/gs4500 Genius 4500 handheld scanner
537 16 block GoldStar CD-ROM
538 0 = /dev/gscd GoldStar CD-ROM
540 17 char OBSOLETE (was Chase serial card)
541 0 = /dev/ttyH0 First Chase port
542 1 = /dev/ttyH1 Second Chase port
543 ...
544 17 block Optics Storage CD-ROM
545 0 = /dev/optcd Optics Storage CD-ROM
547 18 char OBSOLETE (was Chase serial card - alternate devices)
548 0 = /dev/cuh0 Callout device for ttyH0
549 1 = /dev/cuh1 Callout device for ttyH1
550 ...
551 18 block Sanyo CD-ROM
552 0 = /dev/sjcd Sanyo CD-ROM
554 19 char Cyclades serial card
555 0 = /dev/ttyC0 First Cyclades port
556 ...
557 31 = /dev/ttyC31 32nd Cyclades port
559 19 block "Double" compressed disk
560 0 = /dev/double0 First compressed disk
561 ...
562 7 = /dev/double7 Eighth compressed disk
563 128 = /dev/cdouble0 Mirror of first compressed disk
564 ...
565 135 = /dev/cdouble7 Mirror of eighth compressed disk
567 See the Double documentation for the meaning of the
568 mirror devices.
570 20 char Cyclades serial card - alternate devices
571 0 = /dev/cub0 Callout device for ttyC0
572 ...
573 31 = /dev/cub31 Callout device for ttyC31
575 20 block Hitachi CD-ROM (under development)
576 0 = /dev/hitcd Hitachi CD-ROM
578 21 char Generic SCSI access
579 0 = /dev/sg0 First generic SCSI device
580 1 = /dev/sg1 Second generic SCSI device
581 ...
583 Most distributions name these /dev/sga, /dev/sgb...;
584 this sets an unnecessary limit of 26 SCSI devices in
585 the system and is counter to standard Linux
586 device-naming practice.
588 21 block Acorn MFM hard drive interface
589 0 = /dev/mfma First MFM drive whole disk
590 64 = /dev/mfmb Second MFM drive whole disk
592 This device is used on the ARM-based Acorn RiscPC.
593 Partitions are handled the same way as for IDE disks
594 (see major number 3).
596 22 char Digiboard serial card
597 0 = /dev/ttyD0 First Digiboard port
598 1 = /dev/ttyD1 Second Digiboard port
599 ...
600 22 block Second IDE hard disk/CD-ROM interface
601 0 = /dev/hdc Master: whole disk (or CD-ROM)
602 64 = /dev/hdd Slave: whole disk (or CD-ROM)
604 Partitions are handled the same way as for the first
605 interface (see major number 3).
607 23 char Digiboard serial card - alternate devices
608 0 = /dev/cud0 Callout device for ttyD0
609 1 = /dev/cud1 Callout device for ttyD1
610 ...
611 23 block Mitsumi proprietary CD-ROM
612 0 = /dev/mcd Mitsumi CD-ROM
614 24 char Stallion serial card
615 0 = /dev/ttyE0 Stallion port 0 card 0
616 1 = /dev/ttyE1 Stallion port 1 card 0
617 ...
618 64 = /dev/ttyE64 Stallion port 0 card 1
619 65 = /dev/ttyE65 Stallion port 1 card 1
620 ...
621 128 = /dev/ttyE128 Stallion port 0 card 2
622 129 = /dev/ttyE129 Stallion port 1 card 2
623 ...
624 192 = /dev/ttyE192 Stallion port 0 card 3
625 193 = /dev/ttyE193 Stallion port 1 card 3
626 ...
627 24 block Sony CDU-535 CD-ROM
628 0 = /dev/cdu535 Sony CDU-535 CD-ROM
630 25 char Stallion serial card - alternate devices
631 0 = /dev/cue0 Callout device for ttyE0
632 1 = /dev/cue1 Callout device for ttyE1
633 ...
634 64 = /dev/cue64 Callout device for ttyE64
635 65 = /dev/cue65 Callout device for ttyE65
636 ...
637 128 = /dev/cue128 Callout device for ttyE128
638 129 = /dev/cue129 Callout device for ttyE129
639 ...
640 192 = /dev/cue192 Callout device for ttyE192
641 193 = /dev/cue193 Callout device for ttyE193
642 ...
643 25 block First Matsushita (Panasonic/SoundBlaster) CD-ROM
644 0 = /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0
645 1 = /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1
646 2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
647 3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
649 26 char
651 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
652 0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
653 1 = /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1
654 2 = /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2
655 3 = /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3
657 27 char QIC-117 tape
658 0 = /dev/qft0 Unit 0, rewind-on-close
659 1 = /dev/qft1 Unit 1, rewind-on-close
660 2 = /dev/qft2 Unit 2, rewind-on-close
661 3 = /dev/qft3 Unit 3, rewind-on-close
662 4 = /dev/nqft0 Unit 0, no rewind-on-close
663 5 = /dev/nqft1 Unit 1, no rewind-on-close
664 6 = /dev/nqft2 Unit 2, no rewind-on-close
665 7 = /dev/nqft3 Unit 3, no rewind-on-close
666 16 = /dev/zqft0 Unit 0, rewind-on-close, compression
667 17 = /dev/zqft1 Unit 1, rewind-on-close, compression
668 18 = /dev/zqft2 Unit 2, rewind-on-close, compression
669 19 = /dev/zqft3 Unit 3, rewind-on-close, compression
670 20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression
671 21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression
672 22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression
673 23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression
674 32 = /dev/rawqft0 Unit 0, rewind-on-close, no file marks
675 33 = /dev/rawqft1 Unit 1, rewind-on-close, no file marks
676 34 = /dev/rawqft2 Unit 2, rewind-on-close, no file marks
677 35 = /dev/rawqft3 Unit 3, rewind-on-close, no file marks
678 36 = /dev/nrawqft0 Unit 0, no rewind-on-close, no file marks
679 37 = /dev/nrawqft1 Unit 1, no rewind-on-close, no file marks
680 38 = /dev/nrawqft2 Unit 2, no rewind-on-close, no file marks
681 39 = /dev/nrawqft3 Unit 3, no rewind-on-close, no file marks
683 27 block Third Matsushita (Panasonic/SoundBlaster) CD-ROM
684 0 = /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0
685 1 = /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1
686 2 = /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2
687 3 = /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3
689 28 char Stallion serial card - card programming
690 0 = /dev/staliomem0 First Stallion card I/O memory
691 1 = /dev/staliomem1 Second Stallion card I/O memory
692 2 = /dev/staliomem2 Third Stallion card I/O memory
693 3 = /dev/staliomem3 Fourth Stallion card I/O memory
695 28 char Atari SLM ACSI laser printer (68k/Atari)
696 0 = /dev/slm0 First SLM laser printer
697 1 = /dev/slm1 Second SLM laser printer
698 ...
699 28 block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
700 0 = /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0
701 1 = /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1
702 2 = /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2
703 3 = /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3
705 28 block ACSI disk (68k/Atari)
706 0 = /dev/ada First ACSI disk whole disk
707 16 = /dev/adb Second ACSI disk whole disk
708 32 = /dev/adc Third ACSI disk whole disk
709 ...
710 240 = /dev/adp 16th ACSI disk whole disk
712 Partitions are handled in the same way as for IDE
713 disks (see major number 3) except that the limit on
714 partitions is 15, like SCSI.
716 29 char Universal frame buffer
717 0 = /dev/fb0 First frame buffer
718 1 = /dev/fb1 Second frame buffer
719 ...
720 31 = /dev/fb31 32nd frame buffer
722 29 block Aztech/Orchid/Okano/Wearnes CD-ROM
723 0 = /dev/aztcd Aztech CD-ROM
725 30 char iBCS-2 compatibility devices
726 0 = /dev/socksys Socket access
727 1 = /dev/spx SVR3 local X interface
728 32 = /dev/inet/ip Network access
729 33 = /dev/inet/icmp
730 34 = /dev/inet/ggp
731 35 = /dev/inet/ipip
732 36 = /dev/inet/tcp
733 37 = /dev/inet/egp
734 38 = /dev/inet/pup
735 39 = /dev/inet/udp
736 40 = /dev/inet/idp
737 41 = /dev/inet/rawip
739 Additionally, iBCS-2 requires the following links:
741 /dev/ip -> /dev/inet/ip
742 /dev/icmp -> /dev/inet/icmp
743 /dev/ggp -> /dev/inet/ggp
744 /dev/ipip -> /dev/inet/ipip
745 /dev/tcp -> /dev/inet/tcp
746 /dev/egp -> /dev/inet/egp
747 /dev/pup -> /dev/inet/pup
748 /dev/udp -> /dev/inet/udp
749 /dev/idp -> /dev/inet/idp
750 /dev/rawip -> /dev/inet/rawip
751 /dev/inet/arp -> /dev/inet/udp
752 /dev/inet/rip -> /dev/inet/udp
753 /dev/nfsd -> /dev/socksys
754 /dev/X0R -> /dev/null (? apparently not required ?)
756 30 block Philips LMS CM-205 CD-ROM
757 0 = /dev/cm205cd Philips LMS CM-205 CD-ROM
759 /dev/lmscd is an older name for this device. This
760 driver does not work with the CM-205MS CD-ROM.
762 31 char MPU-401 MIDI
763 0 = /dev/mpu401data MPU-401 data port
764 1 = /dev/mpu401stat MPU-401 status port
766 31 block ROM/flash memory card
767 0 = /dev/rom0 First ROM card (rw)
768 ...
769 7 = /dev/rom7 Eighth ROM card (rw)
770 8 = /dev/rrom0 First ROM card (ro)
771 ...
772 15 = /dev/rrom7 Eighth ROM card (ro)
773 16 = /dev/flash0 First flash memory card (rw)
774 ...
775 23 = /dev/flash7 Eighth flash memory card (rw)
776 24 = /dev/rflash0 First flash memory card (ro)
777 ...
778 31 = /dev/rflash7 Eighth flash memory card (ro)
780 The read-write (rw) devices support back-caching
781 written data in RAM, as well as writing to flash RAM
782 devices. The read-only devices (ro) support reading
783 only.
785 32 char Specialix serial card
786 0 = /dev/ttyX0 First Specialix port
787 1 = /dev/ttyX1 Second Specialix port
788 ...
789 32 block Philips LMS CM-206 CD-ROM
790 0 = /dev/cm206cd Philips LMS CM-206 CD-ROM
792 33 char Specialix serial card - alternate devices
793 0 = /dev/cux0 Callout device for ttyX0
794 1 = /dev/cux1 Callout device for ttyX1
795 ...
796 33 block Third IDE hard disk/CD-ROM interface
797 0 = /dev/hde Master: whole disk (or CD-ROM)
798 64 = /dev/hdf Slave: whole disk (or CD-ROM)
800 Partitions are handled the same way as for the first
801 interface (see major number 3).
803 34 char Z8530 HDLC driver
804 0 = /dev/scc0 First Z8530, first port
805 1 = /dev/scc1 First Z8530, second port
806 2 = /dev/scc2 Second Z8530, first port
807 3 = /dev/scc3 Second Z8530, second port
808 ...
810 In a previous version these devices were named
811 /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
812 on.
814 34 block Fourth IDE hard disk/CD-ROM interface
815 0 = /dev/hdg Master: whole disk (or CD-ROM)
816 64 = /dev/hdh Slave: whole disk (or CD-ROM)
818 Partitions are handled the same way as for the first
819 interface (see major number 3).
821 35 char tclmidi MIDI driver
822 0 = /dev/midi0 First MIDI port, kernel timed
823 1 = /dev/midi1 Second MIDI port, kernel timed
824 2 = /dev/midi2 Third MIDI port, kernel timed
825 3 = /dev/midi3 Fourth MIDI port, kernel timed
826 64 = /dev/rmidi0 First MIDI port, untimed
827 65 = /dev/rmidi1 Second MIDI port, untimed
828 66 = /dev/rmidi2 Third MIDI port, untimed
829 67 = /dev/rmidi3 Fourth MIDI port, untimed
830 128 = /dev/smpte0 First MIDI port, SMPTE timed
831 129 = /dev/smpte1 Second MIDI port, SMPTE timed
832 130 = /dev/smpte2 Third MIDI port, SMPTE timed
833 131 = /dev/smpte3 Fourth MIDI port, SMPTE timed
835 35 block Slow memory ramdisk
836 0 = /dev/slram Slow memory ramdisk
838 36 char Netlink support
839 0 = /dev/route Routing, device updates, kernel to user
840 1 = /dev/skip enSKIP security cache control
841 3 = /dev/fwmonitor Firewall packet copies
842 16 = /dev/tap0 First Ethertap device
843 ...
844 31 = /dev/tap15 16th Ethertap device
846 36 block MCA ESDI hard disk
847 0 = /dev/eda First ESDI disk whole disk
848 64 = /dev/edb Second ESDI disk whole disk
849 ...
851 Partitions are handled in the same way as IDE disks
852 (see major number 3).
854 37 char IDE tape
855 0 = /dev/ht0 First IDE tape
856 1 = /dev/ht1 Second IDE tape
857 ...
858 128 = /dev/nht0 First IDE tape, no rewind-on-close
859 129 = /dev/nht1 Second IDE tape, no rewind-on-close
860 ...
862 Currently, only one IDE tape drive is supported.
864 37 block Zorro II ramdisk
865 0 = /dev/z2ram Zorro II ramdisk
867 38 char Myricom PCI Myrinet board
868 0 = /dev/mlanai0 First Myrinet board
869 1 = /dev/mlanai1 Second Myrinet board
870 ...
872 This device is used for status query, board control
873 and "user level packet I/O." This board is also
874 accessible as a standard networking "eth" device.
876 38 block OBSOLETE (was Linux/AP+)
878 39 char ML-16P experimental I/O board
879 0 = /dev/ml16pa-a0 First card, first analog channel
880 1 = /dev/ml16pa-a1 First card, second analog channel
881 ...
882 15 = /dev/ml16pa-a15 First card, 16th analog channel
883 16 = /dev/ml16pa-d First card, digital lines
884 17 = /dev/ml16pa-c0 First card, first counter/timer
885 18 = /dev/ml16pa-c1 First card, second counter/timer
886 19 = /dev/ml16pa-c2 First card, third counter/timer
887 32 = /dev/ml16pb-a0 Second card, first analog channel
888 33 = /dev/ml16pb-a1 Second card, second analog channel
889 ...
890 47 = /dev/ml16pb-a15 Second card, 16th analog channel
891 48 = /dev/ml16pb-d Second card, digital lines
892 49 = /dev/ml16pb-c0 Second card, first counter/timer
893 50 = /dev/ml16pb-c1 Second card, second counter/timer
894 51 = /dev/ml16pb-c2 Second card, third counter/timer
895 ...
896 39 block
898 40 char
900 40 block
902 41 char Yet Another Micro Monitor
903 0 = /dev/yamm Yet Another Micro Monitor
905 41 block
907 42 char Demo/sample use
909 42 block Demo/sample use
911 This number is intended for use in sample code, as
912 well as a general "example" device number. It
913 should never be used for a device driver that is being
914 distributed; either obtain an official number or use
915 the local/experimental range. The sudden addition or
916 removal of a driver with this number should not cause
917 ill effects to the system (bugs excepted.)
919 IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
920 DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
922 43 char isdn4linux virtual modem
923 0 = /dev/ttyI0 First virtual modem
924 ...
925 63 = /dev/ttyI63 64th virtual modem
927 43 block Network block devices
928 0 = /dev/nb0 First network block device
929 1 = /dev/nb1 Second network block device
930 ...
932 Network Block Device is somehow similar to loopback
933 devices: If you read from it, it sends packet across
934 network asking server for data. If you write to it, it
935 sends packet telling server to write. It could be used
936 to mounting filesystems over the net, swapping over
937 the net, implementing block device in userland etc.
939 44 char isdn4linux virtual modem - alternate devices
940 0 = /dev/cui0 Callout device for ttyI0
941 ...
942 63 = /dev/cui63 Callout device for ttyI63
944 44 block Flash Translation Layer (FTL) filesystems
945 0 = /dev/ftla FTL on first Memory Technology Device
946 16 = /dev/ftlb FTL on second Memory Technology Device
947 32 = /dev/ftlc FTL on third Memory Technology Device
948 ...
949 240 = /dev/ftlp FTL on 16th Memory Technology Device
951 Partitions are handled in the same way as for IDE
952 disks (see major number 3) except that the partition
953 limit is 15 rather than 63 per disk (same as SCSI.)
955 45 char isdn4linux ISDN BRI driver
956 0 = /dev/isdn0 First virtual B channel raw data
957 ...
958 63 = /dev/isdn63 64th virtual B channel raw data
959 64 = /dev/isdnctrl0 First channel control/debug
960 ...
961 127 = /dev/isdnctrl63 64th channel control/debug
963 128 = /dev/ippp0 First SyncPPP device
964 ...
965 191 = /dev/ippp63 64th SyncPPP device
967 255 = /dev/isdninfo ISDN monitor interface
969 45 block Parallel port IDE disk devices
970 0 = /dev/pda First parallel port IDE disk
971 16 = /dev/pdb Second parallel port IDE disk
972 32 = /dev/pdc Third parallel port IDE disk
973 48 = /dev/pdd Fourth parallel port IDE disk
975 Partitions are handled in the same way as for IDE
976 disks (see major number 3) except that the partition
977 limit is 15 rather than 63 per disk.
979 46 char Comtrol Rocketport serial card
980 0 = /dev/ttyR0 First Rocketport port
981 1 = /dev/ttyR1 Second Rocketport port
982 ...
983 46 block Parallel port ATAPI CD-ROM devices
984 0 = /dev/pcd0 First parallel port ATAPI CD-ROM
985 1 = /dev/pcd1 Second parallel port ATAPI CD-ROM
986 2 = /dev/pcd2 Third parallel port ATAPI CD-ROM
987 3 = /dev/pcd3 Fourth parallel port ATAPI CD-ROM
989 47 char Comtrol Rocketport serial card - alternate devices
990 0 = /dev/cur0 Callout device for ttyR0
991 1 = /dev/cur1 Callout device for ttyR1
992 ...
993 47 block Parallel port ATAPI disk devices
994 0 = /dev/pf0 First parallel port ATAPI disk
995 1 = /dev/pf1 Second parallel port ATAPI disk
996 2 = /dev/pf2 Third parallel port ATAPI disk
997 3 = /dev/pf3 Fourth parallel port ATAPI disk
999 This driver is intended for floppy disks and similar
1000 devices and hence does not support partitioning.
1002 48 char SDL RISCom serial card
1003 0 = /dev/ttyL0 First RISCom port
1004 1 = /dev/ttyL1 Second RISCom port
1005 ...
1006 48 block Mylex DAC960 PCI RAID controller; first controller
1007 0 = /dev/rd/c0d0 First disk, whole disk
1008 8 = /dev/rd/c0d1 Second disk, whole disk
1009 ...
1010 248 = /dev/rd/c0d31 32nd disk, whole disk
1012 For partitions add:
1013 0 = /dev/rd/c?d? Whole disk
1014 1 = /dev/rd/c?d?p1 First partition
1015 ...
1016 7 = /dev/rd/c?d?p7 Seventh partition
1018 49 char SDL RISCom serial card - alternate devices
1019 0 = /dev/cul0 Callout device for ttyL0
1020 1 = /dev/cul1 Callout device for ttyL1
1021 ...
1022 49 block Mylex DAC960 PCI RAID controller; second controller
1023 0 = /dev/rd/c1d0 First disk, whole disk
1024 8 = /dev/rd/c1d1 Second disk, whole disk
1025 ...
1026 248 = /dev/rd/c1d31 32nd disk, whole disk
1028 Partitions are handled as for major 48.
1030 50 char Reserved for GLINT
1032 50 block Mylex DAC960 PCI RAID controller; third controller
1033 0 = /dev/rd/c2d0 First disk, whole disk
1034 8 = /dev/rd/c2d1 Second disk, whole disk
1035 ...
1036 248 = /dev/rd/c2d31 32nd disk, whole disk
1038 51 char Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
1039 0 = /dev/bc0 First Baycom radio modem
1040 1 = /dev/bc1 Second Baycom radio modem
1041 ...
1042 51 block Mylex DAC960 PCI RAID controller; fourth controller
1043 0 = /dev/rd/c3d0 First disk, whole disk
1044 8 = /dev/rd/c3d1 Second disk, whole disk
1045 ...
1046 248 = /dev/rd/c3d31 32nd disk, whole disk
1048 Partitions are handled as for major 48.
1050 52 char Spellcaster DataComm/BRI ISDN card
1051 0 = /dev/dcbri0 First DataComm card
1052 1 = /dev/dcbri1 Second DataComm card
1053 2 = /dev/dcbri2 Third DataComm card
1054 3 = /dev/dcbri3 Fourth DataComm card
1056 52 block Mylex DAC960 PCI RAID controller; fifth controller
1057 0 = /dev/rd/c4d0 First disk, whole disk
1058 8 = /dev/rd/c4d1 Second disk, whole disk
1059 ...
1060 248 = /dev/rd/c4d31 32nd disk, whole disk
1062 Partitions are handled as for major 48.
1064 53 char BDM interface for remote debugging MC683xx microcontrollers
1065 0 = /dev/pd_bdm0 PD BDM interface on lp0
1066 1 = /dev/pd_bdm1 PD BDM interface on lp1
1067 2 = /dev/pd_bdm2 PD BDM interface on lp2
1068 4 = /dev/icd_bdm0 ICD BDM interface on lp0
1069 5 = /dev/icd_bdm1 ICD BDM interface on lp1
1070 6 = /dev/icd_bdm2 ICD BDM interface on lp2
1072 This device is used for the interfacing to the MC683xx
1073 microcontrollers via Background Debug Mode by use of a
1074 Parallel Port interface. PD is the Motorola Public
1075 Domain Interface and ICD is the commercial interface
1076 by P&E.
1078 53 block Mylex DAC960 PCI RAID controller; sixth controller
1079 0 = /dev/rd/c5d0 First disk, whole disk
1080 8 = /dev/rd/c5d1 Second disk, whole disk
1081 ...
1082 248 = /dev/rd/c5d31 32nd disk, whole disk
1084 Partitions are handled as for major 48.
1086 54 char Electrocardiognosis Holter serial card
1087 0 = /dev/holter0 First Holter port
1088 1 = /dev/holter1 Second Holter port
1089 2 = /dev/holter2 Third Holter port
1091 A custom serial card used by Electrocardiognosis SRL
1092 <mseritan@ottonel.pub.ro> to transfer data from Holter
1093 24-hour heart monitoring equipment.
1095 54 block Mylex DAC960 PCI RAID controller; seventh controller
1096 0 = /dev/rd/c6d0 First disk, whole disk
1097 8 = /dev/rd/c6d1 Second disk, whole disk
1098 ...
1099 248 = /dev/rd/c6d31 32nd disk, whole disk
1101 Partitions are handled as for major 48.
1103 55 char DSP56001 digital signal processor
1104 0 = /dev/dsp56k First DSP56001
1106 55 block Mylex DAC960 PCI RAID controller; eighth controller
1107 0 = /dev/rd/c7d0 First disk, whole disk
1108 8 = /dev/rd/c7d1 Second disk, whole disk
1109 ...
1110 248 = /dev/rd/c7d31 32nd disk, whole disk
1112 Partitions are handled as for major 48.
1114 56 char Apple Desktop Bus
1115 0 = /dev/adb ADB bus control
1117 Additional devices will be added to this number, all
1118 starting with /dev/adb.
1120 56 block Fifth IDE hard disk/CD-ROM interface
1121 0 = /dev/hdi Master: whole disk (or CD-ROM)
1122 64 = /dev/hdj Slave: whole disk (or CD-ROM)
1124 Partitions are handled the same way as for the first
1125 interface (see major number 3).
1127 57 char Hayes ESP serial card
1128 0 = /dev/ttyP0 First ESP port
1129 1 = /dev/ttyP1 Second ESP port
1130 ...
1132 57 block Sixth IDE hard disk/CD-ROM interface
1133 0 = /dev/hdk Master: whole disk (or CD-ROM)
1134 64 = /dev/hdl Slave: whole disk (or CD-ROM)
1136 Partitions are handled the same way as for the first
1137 interface (see major number 3).
1139 58 char Hayes ESP serial card - alternate devices
1140 0 = /dev/cup0 Callout device for ttyP0
1141 1 = /dev/cup1 Callout device for ttyP1
1142 ...
1144 58 block Reserved for logical volume manager
1146 59 char sf firewall package
1147 0 = /dev/firewall Communication with sf kernel module
1149 59 block Generic PDA filesystem device
1150 0 = /dev/pda0 First PDA device
1151 1 = /dev/pda1 Second PDA device
1152 ...
1154 The pda devices are used to mount filesystems on
1155 remote pda's (basically slow handheld machines with
1156 proprietary OS's and limited memory and storage
1157 running small fs translation drivers) through serial /
1158 IRDA / parallel links.
1160 NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1162 60-63 char LOCAL/EXPERIMENTAL USE
1164 60-63 block LOCAL/EXPERIMENTAL USE
1165 Allocated for local/experimental use. For devices not
1166 assigned official numbers, these ranges should be
1167 used in order to avoid conflicting with future assignments.
1169 64 char ENskip kernel encryption package
1170 0 = /dev/enskip Communication with ENskip kernel module
1172 64 block Scramdisk/DriveCrypt encrypted devices
1173 0 = /dev/scramdisk/master Master node for ioctls
1174 1 = /dev/scramdisk/1 First encrypted device
1175 2 = /dev/scramdisk/2 Second encrypted device
1176 ...
1177 255 = /dev/scramdisk/255 255th encrypted device
1179 The filename of the encrypted container and the passwords
1180 are sent via ioctls (using the sdmount tool) to the master
1181 node which then activates them via one of the
1182 /dev/scramdisk/x nodes for loop mounting (all handled
1183 through the sdmount tool).
1185 Requested by: andy@scramdisklinux.org
1187 65 char Sundance "plink" Transputer boards (obsolete, unused)
1188 0 = /dev/plink0 First plink device
1189 1 = /dev/plink1 Second plink device
1190 2 = /dev/plink2 Third plink device
1191 3 = /dev/plink3 Fourth plink device
1192 64 = /dev/rplink0 First plink device, raw
1193 65 = /dev/rplink1 Second plink device, raw
1194 66 = /dev/rplink2 Third plink device, raw
1195 67 = /dev/rplink3 Fourth plink device, raw
1196 128 = /dev/plink0d First plink device, debug
1197 129 = /dev/plink1d Second plink device, debug
1198 130 = /dev/plink2d Third plink device, debug
1199 131 = /dev/plink3d Fourth plink device, debug
1200 192 = /dev/rplink0d First plink device, raw, debug
1201 193 = /dev/rplink1d Second plink device, raw, debug
1202 194 = /dev/rplink2d Third plink device, raw, debug
1203 195 = /dev/rplink3d Fourth plink device, raw, debug
1205 This is a commercial driver; contact James Howes
1206 <jth@prosig.demon.co.uk> for information.
1208 65 block SCSI disk devices (16-31)
1209 0 = /dev/sdq 17th SCSI disk whole disk
1210 16 = /dev/sdr 18th SCSI disk whole disk
1211 32 = /dev/sds 19th SCSI disk whole disk
1212 ...
1213 240 = /dev/sdaf 32nd SCSI disk whole disk
1215 Partitions are handled in the same way as for IDE
1216 disks (see major number 3) except that the limit on
1217 partitions is 15.
1219 66 char YARC PowerPC PCI coprocessor card
1220 0 = /dev/yppcpci0 First YARC card
1221 1 = /dev/yppcpci1 Second YARC card
1222 ...
1224 66 block SCSI disk devices (32-47)
1225 0 = /dev/sdag 33th SCSI disk whole disk
1226 16 = /dev/sdah 34th SCSI disk whole disk
1227 32 = /dev/sdai 35th SCSI disk whole disk
1228 ...
1229 240 = /dev/sdav 48nd SCSI disk whole disk
1231 Partitions are handled in the same way as for IDE
1232 disks (see major number 3) except that the limit on
1233 partitions is 15.
1235 67 char Coda network file system
1236 0 = /dev/cfs0 Coda cache manager
1238 See http://www.coda.cs.cmu.edu for information about Coda.
1240 67 block SCSI disk devices (48-63)
1241 0 = /dev/sdaw 49th SCSI disk whole disk
1242 16 = /dev/sdax 50th SCSI disk whole disk
1243 32 = /dev/sday 51st SCSI disk whole disk
1244 ...
1245 240 = /dev/sdbl 64th SCSI disk whole disk
1247 Partitions are handled in the same way as for IDE
1248 disks (see major number 3) except that the limit on
1249 partitions is 15.
1251 68 char CAPI 2.0 interface
1252 0 = /dev/capi20 Control device
1253 1 = /dev/capi20.00 First CAPI 2.0 application
1254 2 = /dev/capi20.01 Second CAPI 2.0 application
1255 ...
1256 20 = /dev/capi20.19 19th CAPI 2.0 application
1258 ISDN CAPI 2.0 driver for use with CAPI 2.0
1259 applications; currently supports the AVM B1 card.
1261 68 block SCSI disk devices (64-79)
1262 0 = /dev/sdbm 65th SCSI disk whole disk
1263 16 = /dev/sdbn 66th SCSI disk whole disk
1264 32 = /dev/sdbo 67th SCSI disk whole disk
1265 ...
1266 240 = /dev/sdcb 80th SCSI disk whole disk
1268 Partitions are handled in the same way as for IDE
1269 disks (see major number 3) except that the limit on
1270 partitions is 15.
1272 69 char MA16 numeric accelerator card
1273 0 = /dev/ma16 Board memory access
1275 69 block SCSI disk devices (80-95)
1276 0 = /dev/sdcc 81st SCSI disk whole disk
1277 16 = /dev/sdcd 82nd SCSI disk whole disk
1278 32 = /dev/sdce 83th SCSI disk whole disk
1279 ...
1280 240 = /dev/sdcr 96th SCSI disk whole disk
1282 Partitions are handled in the same way as for IDE
1283 disks (see major number 3) except that the limit on
1284 partitions is 15.
1286 70 char SpellCaster Protocol Services Interface
1287 0 = /dev/apscfg Configuration interface
1288 1 = /dev/apsauth Authentication interface
1289 2 = /dev/apslog Logging interface
1290 3 = /dev/apsdbg Debugging interface
1291 64 = /dev/apsisdn ISDN command interface
1292 65 = /dev/apsasync Async command interface
1293 128 = /dev/apsmon Monitor interface
1295 70 block SCSI disk devices (96-111)
1296 0 = /dev/sdcs 97th SCSI disk whole disk
1297 16 = /dev/sdct 98th SCSI disk whole disk
1298 32 = /dev/sdcu 99th SCSI disk whole disk
1299 ...
1300 240 = /dev/sddh 112nd SCSI disk whole disk
1302 Partitions are handled in the same way as for IDE
1303 disks (see major number 3) except that the limit on
1304 partitions is 15.
1306 71 char Computone IntelliPort II serial card
1307 0 = /dev/ttyF0 IntelliPort II board 0, port 0
1308 1 = /dev/ttyF1 IntelliPort II board 0, port 1
1309 ...
1310 63 = /dev/ttyF63 IntelliPort II board 0, port 63
1311 64 = /dev/ttyF64 IntelliPort II board 1, port 0
1312 65 = /dev/ttyF65 IntelliPort II board 1, port 1
1313 ...
1314 127 = /dev/ttyF127 IntelliPort II board 1, port 63
1315 128 = /dev/ttyF128 IntelliPort II board 2, port 0
1316 129 = /dev/ttyF129 IntelliPort II board 2, port 1
1317 ...
1318 191 = /dev/ttyF191 IntelliPort II board 2, port 63
1319 192 = /dev/ttyF192 IntelliPort II board 3, port 0
1320 193 = /dev/ttyF193 IntelliPort II board 3, port 1
1321 ...
1322 255 = /dev/ttyF255 IntelliPort II board 3, port 63
1324 71 block SCSI disk devices (112-127)
1325 0 = /dev/sddi 113th SCSI disk whole disk
1326 16 = /dev/sddj 114th SCSI disk whole disk
1327 32 = /dev/sddk 115th SCSI disk whole disk
1328 ...
1329 240 = /dev/sddx 128th SCSI disk whole disk
1331 Partitions are handled in the same way as for IDE
1332 disks (see major number 3) except that the limit on
1333 partitions is 15.
1335 72 char Computone IntelliPort II serial card - alternate devices
1336 0 = /dev/cuf0 Callout device for ttyF0
1337 1 = /dev/cuf1 Callout device for ttyF1
1338 ...
1339 63 = /dev/cuf63 Callout device for ttyF63
1340 64 = /dev/cuf64 Callout device for ttyF64
1341 65 = /dev/cuf65 Callout device for ttyF65
1342 ...
1343 127 = /dev/cuf127 Callout device for ttyF127
1344 128 = /dev/cuf128 Callout device for ttyF128
1345 129 = /dev/cuf129 Callout device for ttyF129
1346 ...
1347 191 = /dev/cuf191 Callout device for ttyF191
1348 192 = /dev/cuf192 Callout device for ttyF192
1349 193 = /dev/cuf193 Callout device for ttyF193
1350 ...
1351 255 = /dev/cuf255 Callout device for ttyF255
1353 72 block Compaq Intelligent Drive Array, first controller
1354 0 = /dev/ida/c0d0 First logical drive whole disk
1355 16 = /dev/ida/c0d1 Second logical drive whole disk
1356 ...
1357 240 = /dev/ida/c0d15 16th logical drive whole disk
1359 Partitions are handled the same way as for Mylex
1360 DAC960 (see major number 48) except that the limit on
1361 partitions is 15.
1363 73 char Computone IntelliPort II serial card - control devices
1364 0 = /dev/ip2ipl0 Loadware device for board 0
1365 1 = /dev/ip2stat0 Status device for board 0
1366 4 = /dev/ip2ipl1 Loadware device for board 1
1367 5 = /dev/ip2stat1 Status device for board 1
1368 8 = /dev/ip2ipl2 Loadware device for board 2
1369 9 = /dev/ip2stat2 Status device for board 2
1370 12 = /dev/ip2ipl3 Loadware device for board 3
1371 13 = /dev/ip2stat3 Status device for board 3
1373 73 block Compaq Intelligent Drive Array, second controller
1374 0 = /dev/ida/c1d0 First logical drive whole disk
1375 16 = /dev/ida/c1d1 Second logical drive whole disk
1376 ...
1377 240 = /dev/ida/c1d15 16th logical drive whole disk
1379 Partitions are handled the same way as for Mylex
1380 DAC960 (see major number 48) except that the limit on
1381 partitions is 15.
1383 74 char SCI bridge
1384 0 = /dev/SCI/0 SCI device 0
1385 1 = /dev/SCI/1 SCI device 1
1386 ...
1388 Currently for Dolphin Interconnect Solutions' PCI-SCI
1389 bridge.
1391 74 block Compaq Intelligent Drive Array, third controller
1392 0 = /dev/ida/c2d0 First logical drive whole disk
1393 16 = /dev/ida/c2d1 Second logical drive whole disk
1394 ...
1395 240 = /dev/ida/c2d15 16th logical drive whole disk
1397 Partitions are handled the same way as for Mylex
1398 DAC960 (see major number 48) except that the limit on
1399 partitions is 15.
1401 75 char Specialix IO8+ serial card
1402 0 = /dev/ttyW0 First IO8+ port, first card
1403 1 = /dev/ttyW1 Second IO8+ port, first card
1404 ...
1405 8 = /dev/ttyW8 First IO8+ port, second card
1406 ...
1408 75 block Compaq Intelligent Drive Array, fourth controller
1409 0 = /dev/ida/c3d0 First logical drive whole disk
1410 16 = /dev/ida/c3d1 Second logical drive whole disk
1411 ...
1412 240 = /dev/ida/c3d15 16th logical drive whole disk
1414 Partitions are handled the same way as for Mylex
1415 DAC960 (see major number 48) except that the limit on
1416 partitions is 15.
1418 76 char Specialix IO8+ serial card - alternate devices
1419 0 = /dev/cuw0 Callout device for ttyW0
1420 1 = /dev/cuw1 Callout device for ttyW1
1421 ...
1422 8 = /dev/cuw8 Callout device for ttyW8
1423 ...
1425 76 block Compaq Intelligent Drive Array, fifth controller
1426 0 = /dev/ida/c4d0 First logical drive whole disk
1427 16 = /dev/ida/c4d1 Second logical drive whole disk
1428 ...
1429 240 = /dev/ida/c4d15 16th logical drive whole disk
1431 Partitions are handled the same way as for Mylex
1432 DAC960 (see major number 48) except that the limit on
1433 partitions is 15.
1436 77 char ComScire Quantum Noise Generator
1437 0 = /dev/qng ComScire Quantum Noise Generator
1439 77 block Compaq Intelligent Drive Array, sixth controller
1440 0 = /dev/ida/c5d0 First logical drive whole disk
1441 16 = /dev/ida/c5d1 Second logical drive whole disk
1442 ...
1443 240 = /dev/ida/c5d15 16th logical drive whole disk
1445 Partitions are handled the same way as for Mylex
1446 DAC960 (see major number 48) except that the limit on
1447 partitions is 15.
1449 78 char PAM Software's multimodem boards
1450 0 = /dev/ttyM0 First PAM modem
1451 1 = /dev/ttyM1 Second PAM modem
1452 ...
1454 78 block Compaq Intelligent Drive Array, seventh controller
1455 0 = /dev/ida/c6d0 First logical drive whole disk
1456 16 = /dev/ida/c6d1 Second logical drive whole disk
1457 ...
1458 240 = /dev/ida/c6d15 16th logical drive whole disk
1460 Partitions are handled the same way as for Mylex
1461 DAC960 (see major number 48) except that the limit on
1462 partitions is 15.
1464 79 char PAM Software's multimodem boards - alternate devices
1465 0 = /dev/cum0 Callout device for ttyM0
1466 1 = /dev/cum1 Callout device for ttyM1
1467 ...
1469 79 block Compaq Intelligent Drive Array, eighth controller
1470 0 = /dev/ida/c7d0 First logical drive whole disk
1471 16 = /dev/ida/c7d1 Second logical drive whole disk
1472 ...
1473 240 = /dev/ida/c715 16th logical drive whole disk
1475 Partitions are handled the same way as for Mylex
1476 DAC960 (see major number 48) except that the limit on
1477 partitions is 15.
1479 80 char Photometrics AT200 CCD camera
1480 0 = /dev/at200 Photometrics AT200 CCD camera
1482 80 block I2O hard disk
1483 0 = /dev/i2o/hda First I2O hard disk, whole disk
1484 16 = /dev/i2o/hdb Second I2O hard disk, whole disk
1485 ...
1486 240 = /dev/i2o/hdp 16th I2O hard disk, whole disk
1488 Partitions are handled in the same way as for IDE
1489 disks (see major number 3) except that the limit on
1490 partitions is 15.
1492 81 char video4linux
1493 0 = /dev/video0 Video capture/overlay device
1494 ...
1495 63 = /dev/video63 Video capture/overlay device
1496 64 = /dev/radio0 Radio device
1497 ...
1498 127 = /dev/radio63 Radio device
1499 224 = /dev/vbi0 Vertical blank interrupt
1500 ...
1501 255 = /dev/vbi31 Vertical blank interrupt
1503 81 block I2O hard disk
1504 0 = /dev/i2o/hdq 17th I2O hard disk, whole disk
1505 16 = /dev/i2o/hdr 18th I2O hard disk, whole disk
1506 ...
1507 240 = /dev/i2o/hdaf 32nd I2O hard disk, whole disk
1509 Partitions are handled in the same way as for IDE
1510 disks (see major number 3) except that the limit on
1511 partitions is 15.
1513 82 char WiNRADiO communications receiver card
1514 0 = /dev/winradio0 First WiNRADiO card
1515 1 = /dev/winradio1 Second WiNRADiO card
1516 ...
1518 The driver and documentation may be obtained from
1519 http://www.winradio.com/
1521 82 block I2O hard disk
1522 0 = /dev/i2o/hdag 33rd I2O hard disk, whole disk
1523 16 = /dev/i2o/hdah 34th I2O hard disk, whole disk
1524 ...
1525 240 = /dev/i2o/hdav 48th I2O hard disk, whole disk
1527 Partitions are handled in the same way as for IDE
1528 disks (see major number 3) except that the limit on
1529 partitions is 15.
1531 83 char Matrox mga_vid video driver
1532 0 = /dev/mga_vid0 1st video card
1533 1 = /dev/mga_vid1 2nd video card
1534 2 = /dev/mga_vid2 3rd video card
1535 ...
1536 15 = /dev/mga_vid15 16th video card
1538 83 block I2O hard disk
1539 0 = /dev/i2o/hdaw 49th I2O hard disk, whole disk
1540 16 = /dev/i2o/hdax 50th I2O hard disk, whole disk
1541 ...
1542 240 = /dev/i2o/hdbl 64th I2O hard disk, whole disk
1544 Partitions are handled in the same way as for IDE
1545 disks (see major number 3) except that the limit on
1546 partitions is 15.
1548 84 char Ikon 1011[57] Versatec Greensheet Interface
1549 0 = /dev/ihcp0 First Greensheet port
1550 1 = /dev/ihcp1 Second Greensheet port
1552 84 block I2O hard disk
1553 0 = /dev/i2o/hdbm 65th I2O hard disk, whole disk
1554 16 = /dev/i2o/hdbn 66th I2O hard disk, whole disk
1555 ...
1556 240 = /dev/i2o/hdcb 80th I2O hard disk, whole disk
1558 Partitions are handled in the same way as for IDE
1559 disks (see major number 3) except that the limit on
1560 partitions is 15.
1562 85 char Linux/SGI shared memory input queue
1563 0 = /dev/shmiq Master shared input queue
1564 1 = /dev/qcntl0 First device pushed
1565 2 = /dev/qcntl1 Second device pushed
1566 ...
1568 85 block I2O hard disk
1569 0 = /dev/i2o/hdcc 81st I2O hard disk, whole disk
1570 16 = /dev/i2o/hdcd 82nd I2O hard disk, whole disk
1571 ...
1572 240 = /dev/i2o/hdcr 96th I2O hard disk, whole disk
1574 Partitions are handled in the same way as for IDE
1575 disks (see major number 3) except that the limit on
1576 partitions is 15.
1578 86 char SCSI media changer
1579 0 = /dev/sch0 First SCSI media changer
1580 1 = /dev/sch1 Second SCSI media changer
1581 ...
1583 86 block I2O hard disk
1584 0 = /dev/i2o/hdcs 97th I2O hard disk, whole disk
1585 16 = /dev/i2o/hdct 98th I2O hard disk, whole disk
1586 ...
1587 240 = /dev/i2o/hddh 112th I2O hard disk, whole disk
1589 Partitions are handled in the same way as for IDE
1590 disks (see major number 3) except that the limit on
1591 partitions is 15.
1593 87 char Sony Control-A1 stereo control bus
1594 0 = /dev/controla0 First device on chain
1595 1 = /dev/controla1 Second device on chain
1596 ...
1598 87 block I2O hard disk
1599 0 = /dev/i2o/hddi 113rd I2O hard disk, whole disk
1600 16 = /dev/i2o/hddj 114th I2O hard disk, whole disk
1601 ...
1602 240 = /dev/i2o/hddx 128th I2O hard disk, whole disk
1604 Partitions are handled in the same way as for IDE
1605 disks (see major number 3) except that the limit on
1606 partitions is 15.
1608 88 char COMX synchronous serial card
1609 0 = /dev/comx0 COMX channel 0
1610 1 = /dev/comx1 COMX channel 1
1611 ...
1613 88 block Seventh IDE hard disk/CD-ROM interface
1614 0 = /dev/hdm Master: whole disk (or CD-ROM)
1615 64 = /dev/hdn Slave: whole disk (or CD-ROM)
1617 Partitions are handled the same way as for the first
1618 interface (see major number 3).
1620 89 char I2C bus interface
1621 0 = /dev/i2c-0 First I2C adapter
1622 1 = /dev/i2c-1 Second I2C adapter
1623 ...
1625 89 block Eighth IDE hard disk/CD-ROM interface
1626 0 = /dev/hdo Master: whole disk (or CD-ROM)
1627 64 = /dev/hdp Slave: whole disk (or CD-ROM)
1629 Partitions are handled the same way as for the first
1630 interface (see major number 3).
1632 90 char Memory Technology Device (RAM, ROM, Flash)
1633 0 = /dev/mtd0 First MTD (rw)
1634 1 = /dev/mtdr0 First MTD (ro)
1635 ...
1636 30 = /dev/mtd15 16th MTD (rw)
1637 31 = /dev/mtdr15 16th MTD (ro)
1639 90 block Ninth IDE hard disk/CD-ROM interface
1640 0 = /dev/hdq Master: whole disk (or CD-ROM)
1641 64 = /dev/hdr Slave: whole disk (or CD-ROM)
1643 Partitions are handled the same way as for the first
1644 interface (see major number 3).
1646 91 char CAN-Bus devices
1647 0 = /dev/can0 First CAN-Bus controller
1648 1 = /dev/can1 Second CAN-Bus controller
1649 ...
1651 91 block Tenth IDE hard disk/CD-ROM interface
1652 0 = /dev/hds Master: whole disk (or CD-ROM)
1653 64 = /dev/hdt Slave: whole disk (or CD-ROM)
1655 Partitions are handled the same way as for the first
1656 interface (see major number 3).
1658 92 char Reserved for ith Kommunikationstechnik MIC ISDN card
1660 92 block PPDD encrypted disk driver
1661 0 = /dev/ppdd0 First encrypted disk
1662 1 = /dev/ppdd1 Second encrypted disk
1663 ...
1665 Partitions are handled in the same way as for IDE
1666 disks (see major number 3) except that the limit on
1667 partitions is 15.
1669 93 char
1671 93 block NAND Flash Translation Layer filesystem
1672 0 = /dev/nftla First NFTL layer
1673 16 = /dev/nftlb Second NFTL layer
1674 ...
1675 240 = /dev/nftlp 16th NTFL layer
1677 94 char
1679 94 block IBM S/390 DASD block storage
1680 0 = /dev/dasda First DASD device, major
1681 1 = /dev/dasda1 First DASD device, block 1
1682 2 = /dev/dasda2 First DASD device, block 2
1683 3 = /dev/dasda3 First DASD device, block 3
1684 4 = /dev/dasdb Second DASD device, major
1685 5 = /dev/dasdb1 Second DASD device, block 1
1686 6 = /dev/dasdb2 Second DASD device, block 2
1687 7 = /dev/dasdb3 Second DASD device, block 3
1688 ...
1690 95 char IP filter
1691 0 = /dev/ipl Filter control device/log file
1692 1 = /dev/ipnat NAT control device/log file
1693 2 = /dev/ipstate State information log file
1694 3 = /dev/ipauth Authentication control device/log file
1695 ...
1697 96 char Parallel port ATAPI tape devices
1698 0 = /dev/pt0 First parallel port ATAPI tape
1699 1 = /dev/pt1 Second parallel port ATAPI tape
1700 ...
1701 128 = /dev/npt0 First p.p. ATAPI tape, no rewind
1702 129 = /dev/npt1 Second p.p. ATAPI tape, no rewind
1703 ...
1705 96 block Inverse NAND Flash Translation Layer
1706 0 = /dev/inftla First INFTL layer
1707 16 = /dev/inftlb Second INFTL layer
1708 ...
1709 240 = /dev/inftlp 16th INTFL layer
1711 97 char Parallel port generic ATAPI interface
1712 0 = /dev/pg0 First parallel port ATAPI device
1713 1 = /dev/pg1 Second parallel port ATAPI device
1714 2 = /dev/pg2 Third parallel port ATAPI device
1715 3 = /dev/pg3 Fourth parallel port ATAPI device
1717 These devices support the same API as the generic SCSI
1718 devices.
1720 98 char Control and Measurement Device (comedi)
1721 0 = /dev/comedi0 First comedi device
1722 1 = /dev/comedi1 Second comedi device
1723 ...
1725 See http://stm.lbl.gov/comedi.
1727 98 block User-mode virtual block device
1728 0 = /dev/ubda First user-mode block device
1729 16 = /dev/udbb Second user-mode block device
1730 ...
1732 Partitions are handled in the same way as for IDE
1733 disks (see major number 3) except that the limit on
1734 partitions is 15.
1736 This device is used by the user-mode virtual kernel port.
1738 99 char Raw parallel ports
1739 0 = /dev/parport0 First parallel port
1740 1 = /dev/parport1 Second parallel port
1741 ...
1743 99 block JavaStation flash disk
1744 0 = /dev/jsfd JavaStation flash disk
1746 100 char Telephony for Linux
1747 0 = /dev/phone0 First telephony device
1748 1 = /dev/phone1 Second telephony device
1749 ...
1751 101 char Motorola DSP 56xxx board
1752 0 = /dev/mdspstat Status information
1753 1 = /dev/mdsp1 First DSP board I/O controls
1754 ...
1755 16 = /dev/mdsp16 16th DSP board I/O controls
1757 101 block AMI HyperDisk RAID controller
1758 0 = /dev/amiraid/ar0 First array whole disk
1759 16 = /dev/amiraid/ar1 Second array whole disk
1760 ...
1761 240 = /dev/amiraid/ar15 16th array whole disk
1763 For each device, partitions are added as:
1764 0 = /dev/amiraid/ar? Whole disk
1765 1 = /dev/amiraid/ar?p1 First partition
1766 2 = /dev/amiraid/ar?p2 Second partition
1767 ...
1768 15 = /dev/amiraid/ar?p15 15th partition
1770 102 char
1772 102 block Compressed block device
1773 0 = /dev/cbd/a First compressed block device, whole device
1774 16 = /dev/cbd/b Second compressed block device, whole device
1775 ...
1776 240 = /dev/cbd/p 16th compressed block device, whole device
1778 Partitions are handled in the same way as for IDE
1779 disks (see major number 3) except that the limit on
1780 partitions is 15.
1782 103 char Arla network file system
1783 0 = /dev/nnpfs0 First NNPFS device
1784 1 = /dev/nnpfs1 Second NNPFS device
1786 Arla is a free clone of the Andrew File System, AFS.
1787 The NNPFS device gives user mode filesystem
1788 implementations a kernel presence for caching and easy
1789 mounting. For more information about the project,
1790 write to <arla-drinkers@stacken.kth.se> or see
1791 http://www.stacken.kth.se/project/arla/
1793 103 block Audit device
1794 0 = /dev/audit Audit device
1796 104 char Flash BIOS support
1798 104 block Compaq Next Generation Drive Array, first controller
1799 0 = /dev/cciss/c0d0 First logical drive, whole disk
1800 16 = /dev/cciss/c0d1 Second logical drive, whole disk
1801 ...
1802 240 = /dev/cciss/c0d15 16th logical drive, whole disk
1804 Partitions are handled the same way as for Mylex
1805 DAC960 (see major number 48) except that the limit on
1806 partitions is 15.
1808 105 char Comtrol VS-1000 serial controller
1809 0 = /dev/ttyV0 First VS-1000 port
1810 1 = /dev/ttyV1 Second VS-1000 port
1811 ...
1813 105 block Compaq Next Generation Drive Array, second controller
1814 0 = /dev/cciss/c1d0 First logical drive, whole disk
1815 16 = /dev/cciss/c1d1 Second logical drive, whole disk
1816 ...
1817 240 = /dev/cciss/c1d15 16th logical drive, whole disk
1819 Partitions are handled the same way as for Mylex
1820 DAC960 (see major number 48) except that the limit on
1821 partitions is 15.
1823 106 char Comtrol VS-1000 serial controller - alternate devices
1824 0 = /dev/cuv0 First VS-1000 port
1825 1 = /dev/cuv1 Second VS-1000 port
1826 ...
1828 106 block Compaq Next Generation Drive Array, third controller
1829 0 = /dev/cciss/c2d0 First logical drive, whole disk
1830 16 = /dev/cciss/c2d1 Second logical drive, whole disk
1831 ...
1832 240 = /dev/cciss/c2d15 16th logical drive, whole disk
1834 Partitions are handled the same way as for Mylex
1835 DAC960 (see major number 48) except that the limit on
1836 partitions is 15.
1838 107 char 3Dfx Voodoo Graphics device
1839 0 = /dev/3dfx Primary 3Dfx graphics device
1841 107 block Compaq Next Generation Drive Array, fourth controller
1842 0 = /dev/cciss/c3d0 First logical drive, whole disk
1843 16 = /dev/cciss/c3d1 Second logical drive, whole disk
1844 ...
1845 240 = /dev/cciss/c3d15 16th logical drive, whole disk
1847 Partitions are handled the same way as for Mylex
1848 DAC960 (see major number 48) except that the limit on
1849 partitions is 15.
1851 108 char Device independent PPP interface
1852 0 = /dev/ppp Device independent PPP interface
1854 108 block Compaq Next Generation Drive Array, fifth controller
1855 0 = /dev/cciss/c4d0 First logical drive, whole disk
1856 16 = /dev/cciss/c4d1 Second logical drive, whole disk
1857 ...
1858 240 = /dev/cciss/c4d15 16th logical drive, whole disk
1860 Partitions are handled the same way as for Mylex
1861 DAC960 (see major number 48) except that the limit on
1862 partitions is 15.
1864 109 char Reserved for logical volume manager
1866 109 block Compaq Next Generation Drive Array, sixth controller
1867 0 = /dev/cciss/c5d0 First logical drive, whole disk
1868 16 = /dev/cciss/c5d1 Second logical drive, whole disk
1869 ...
1870 240 = /dev/cciss/c5d15 16th logical drive, whole disk
1872 Partitions are handled the same way as for Mylex
1873 DAC960 (see major number 48) except that the limit on
1874 partitions is 15.
1876 110 char miroMEDIA Surround board
1877 0 = /dev/srnd0 First miroMEDIA Surround board
1878 1 = /dev/srnd1 Second miroMEDIA Surround board
1879 ...
1881 110 block Compaq Next Generation Drive Array, seventh controller
1882 0 = /dev/cciss/c6d0 First logical drive, whole disk
1883 16 = /dev/cciss/c6d1 Second logical drive, whole disk
1884 ...
1885 240 = /dev/cciss/c6d15 16th logical drive, whole disk
1887 Partitions are handled the same way as for Mylex
1888 DAC960 (see major number 48) except that the limit on
1889 partitions is 15.
1891 111 char
1893 111 block Compaq Next Generation Drive Array, eighth controller
1894 0 = /dev/cciss/c7d0 First logical drive, whole disk
1895 16 = /dev/cciss/c7d1 Second logical drive, whole disk
1896 ...
1897 240 = /dev/cciss/c7d15 16th logical drive, whole disk
1899 Partitions are handled the same way as for Mylex
1900 DAC960 (see major number 48) except that the limit on
1901 partitions is 15.
1903 112 char ISI serial card
1904 0 = /dev/ttyM0 First ISI port
1905 1 = /dev/ttyM1 Second ISI port
1906 ...
1908 There is currently a device-naming conflict between
1909 these and PAM multimodems (major 78).
1911 112 block IBM iSeries virtual disk
1912 0 = /dev/iseries/vda First virtual disk, whole disk
1913 8 = /dev/iseries/vdb Second virtual disk, whole disk
1914 ...
1915 200 = /dev/iseries/vdz 26th virtual disk, whole disk
1916 208 = /dev/iseries/vdaa 27th virtual disk, whole disk
1917 ...
1918 248 = /dev/iseries/vdaf 32nd virtual disk, whole disk
1920 Partitions are handled in the same way as for IDE
1921 disks (see major number 3) except that the limit on
1922 partitions is 7.
1924 113 char ISI serial card - alternate devices
1925 0 = /dev/cum0 Callout device for ttyM0
1926 1 = /dev/cum1 Callout device for ttyM1
1927 ...
1929 113 block IBM iSeries virtual CD-ROM
1930 0 = /dev/iseries/vcda First virtual CD-ROM
1931 1 = /dev/iseries/vcdb Second virtual CD-ROM
1932 ...
1934 114 char Picture Elements ISE board
1935 0 = /dev/ise0 First ISE board
1936 1 = /dev/ise1 Second ISE board
1937 ...
1938 128 = /dev/isex0 Control node for first ISE board
1939 129 = /dev/isex1 Control node for second ISE board
1940 ...
1942 The ISE board is an embedded computer, optimized for
1943 image processing. The /dev/iseN nodes are the general
1944 I/O access to the board, the /dev/isex0 nodes command
1945 nodes used to control the board.
1947 114 block IDE BIOS powered software RAID interfaces such as the
1948 Promise Fastrak
1950 0 = /dev/ataraid/d0
1951 1 = /dev/ataraid/d0p1
1952 2 = /dev/ataraid/d0p2
1953 ...
1954 16 = /dev/ataraid/d1
1955 17 = /dev/ataraid/d1p1
1956 18 = /dev/ataraid/d1p2
1957 ...
1958 255 = /dev/ataraid/d15p15
1960 Partitions are handled in the same way as for IDE
1961 disks (see major number 3) except that the limit on
1962 partitions is 15.
1964 115 char TI link cable devices (115 was formerly the console driver speaker)
1965 0 = /dev/tipar0 Parallel cable on first parallel port
1966 ...
1967 7 = /dev/tipar7 Parallel cable on seventh parallel port
1969 8 = /dev/tiser0 Serial cable on first serial port
1970 ...
1971 15 = /dev/tiser7 Serial cable on seventh serial port
1973 16 = /dev/tiusb0 First USB cable
1974 ...
1975 47 = /dev/tiusb31 32nd USB cable
1977 115 block NetWare (NWFS) Devices (0-255)
1979 The NWFS (NetWare) devices are used to present a
1980 collection of NetWare Mirror Groups or NetWare
1981 Partitions as a logical storage segment for
1982 use in mounting NetWare volumes. A maximum of
1983 256 NetWare volumes can be supported in a single
1984 machine.
1986 http://cgfa.telepac.pt/ftp2/kernel.org/linux/kernel/people/jmerkey/nwfs/
1988 0 = /dev/nwfs/v0 First NetWare (NWFS) Logical Volume
1989 1 = /dev/nwfs/v1 Second NetWare (NWFS) Logical Volume
1990 2 = /dev/nwfs/v2 Third NetWare (NWFS) Logical Volume
1991 ...
1992 255 = /dev/nwfs/v255 Last NetWare (NWFS) Logical Volume
1994 116 char Advanced Linux Sound Driver (ALSA)
1996 116 block MicroMemory battery backed RAM adapter (NVRAM)
1997 Supports 16 boards, 15 partitions each.
1998 Requested by neilb at cse.unsw.edu.au.
2000 0 = /dev/umem/d0 Whole of first board
2001 1 = /dev/umem/d0p1 First partition of first board
2002 2 = /dev/umem/d0p2 Second partition of first board
2003 15 = /dev/umem/d0p15 15th partition of first board
2005 16 = /dev/umem/d1 Whole of second board
2006 17 = /dev/umem/d1p1 First partition of second board
2007 ...
2008 255= /dev/umem/d15p15 15th partition of 16th board.
2010 117 char COSA/SRP synchronous serial card
2011 0 = /dev/cosa0c0 1st board, 1st channel
2012 1 = /dev/cosa0c1 1st board, 2nd channel
2013 ...
2014 16 = /dev/cosa1c0 2nd board, 1st channel
2015 17 = /dev/cosa1c1 2nd board, 2nd channel
2016 ...
2018 117 block Enterprise Volume Management System (EVMS)
2020 The EVMS driver uses a layered, plug-in model to provide
2021 unparalleled flexibility and extensibility in managing
2022 storage. This allows for easy expansion or customization
2023 of various levels of volume management. Requested by
2024 Mark Peloquin (peloquin at us.ibm.com).
2026 Note: EVMS populates and manages all the devnodes in
2027 /dev/evms.
2029 http://sf.net/projects/evms
2031 0 = /dev/evms/block_device EVMS block device
2032 1 = /dev/evms/legacyname1 First EVMS legacy device
2033 2 = /dev/evms/legacyname2 Second EVMS legacy device
2034 ...
2035 Both ranges can grow (down or up) until they meet.
2036 ...
2037 254 = /dev/evms/EVMSname2 Second EVMS native device
2038 255 = /dev/evms/EVMSname1 First EVMS native device
2040 Note: legacyname(s) are derived from the normal legacy
2041 device names. For example, /dev/hda5 would become
2042 /dev/evms/hda5.
2044 118 char IBM Cryptographic Accelerator
2045 0 = /dev/ica Virtual interface to all IBM Crypto Accelerators
2046 1 = /dev/ica0 IBMCA Device 0
2047 2 = /dev/ica1 IBMCA Device 1
2048 ...
2050 119 char VMware virtual network control
2051 0 = /dev/vnet0 1st virtual network
2052 1 = /dev/vnet1 2nd virtual network
2053 ...
2055 120-127 char LOCAL/EXPERIMENTAL USE
2057 120-127 block LOCAL/EXPERIMENTAL USE
2058 Allocated for local/experimental use. For devices not
2059 assigned official numbers, these ranges should be
2060 used in order to avoid conflicting with future assignments.
2062 128-135 char Unix98 PTY masters
2064 These devices should not have corresponding device
2065 nodes; instead they should be accessed through the
2066 /dev/ptmx cloning interface.
2068 128 block SCSI disk devices (128-143)
2069 0 = /dev/sddy 129th SCSI disk whole disk
2070 16 = /dev/sddz 130th SCSI disk whole disk
2071 32 = /dev/sdea 131th SCSI disk whole disk
2072 ...
2073 240 = /dev/sden 144th SCSI disk whole disk
2075 Partitions are handled in the same way as for IDE
2076 disks (see major number 3) except that the limit on
2077 partitions is 15.
2079 129 block SCSI disk devices (144-159)
2080 0 = /dev/sdeo 145th SCSI disk whole disk
2081 16 = /dev/sdep 146th SCSI disk whole disk
2082 32 = /dev/sdeq 147th SCSI disk whole disk
2083 ...
2084 240 = /dev/sdfd 160th SCSI disk whole disk
2086 Partitions are handled in the same way as for IDE
2087 disks (see major number 3) except that the limit on
2088 partitions is 15.
2090 130 char (Misc devices)
2092 130 block SCSI disk devices (160-175)
2093 0 = /dev/sdfe 161st SCSI disk whole disk
2094 16 = /dev/sdff 162nd SCSI disk whole disk
2095 32 = /dev/sdfg 163rd SCSI disk whole disk
2096 ...
2097 240 = /dev/sdft 176th SCSI disk whole disk
2099 Partitions are handled in the same way as for IDE
2100 disks (see major number 3) except that the limit on
2101 partitions is 15.
2103 131 block SCSI disk devices (176-191)
2104 0 = /dev/sdfu 177th SCSI disk whole disk
2105 16 = /dev/sdfv 178th SCSI disk whole disk
2106 32 = /dev/sdfw 179th SCSI disk whole disk
2107 ...
2108 240 = /dev/sdgj 192nd SCSI disk whole disk
2110 Partitions are handled in the same way as for IDE
2111 disks (see major number 3) except that the limit on
2112 partitions is 15.
2114 132 block SCSI disk devices (192-207)
2115 0 = /dev/sdgk 193rd SCSI disk whole disk
2116 16 = /dev/sdgl 194th SCSI disk whole disk
2117 32 = /dev/sdgm 195th SCSI disk whole disk
2118 ...
2119 240 = /dev/sdgz 208th SCSI disk whole disk
2121 Partitions are handled in the same way as for IDE
2122 disks (see major number 3) except that the limit on
2123 partitions is 15.
2125 133 block SCSI disk devices (208-223)
2126 0 = /dev/sdha 209th SCSI disk whole disk
2127 16 = /dev/sdhb 210th SCSI disk whole disk
2128 32 = /dev/sdhc 211th SCSI disk whole disk
2129 ...
2130 240 = /dev/sdhp 224th SCSI disk whole disk
2132 Partitions are handled in the same way as for IDE
2133 disks (see major number 3) except that the limit on
2134 partitions is 15.
2136 134 block SCSI disk devices (224-239)
2137 0 = /dev/sdhq 225th SCSI disk whole disk
2138 16 = /dev/sdhr 226th SCSI disk whole disk
2139 32 = /dev/sdhs 227th SCSI disk whole disk
2140 ...
2141 240 = /dev/sdif 240th SCSI disk whole disk
2143 Partitions are handled in the same way as for IDE
2144 disks (see major number 3) except that the limit on
2145 partitions is 15.
2147 135 block SCSI disk devices (240-255)
2148 0 = /dev/sdig 241st SCSI disk whole disk
2149 16 = /dev/sdih 242nd SCSI disk whole disk
2150 32 = /dev/sdih 243rd SCSI disk whole disk
2151 ...
2152 240 = /dev/sdiv 256th SCSI disk whole disk
2154 Partitions are handled in the same way as for IDE
2155 disks (see major number 3) except that the limit on
2156 partitions is 15.
2158 136-143 char Unix98 PTY slaves
2159 0 = /dev/pts/0 First Unix98 pseudo-TTY
2160 1 = /dev/pts/1 Second Unix98 pseudo-TTY
2161 ...
2163 These device nodes are automatically generated with
2164 the proper permissions and modes by mounting the
2165 devpts filesystem onto /dev/pts with the appropriate
2166 mount options (distribution dependent, however, on
2167 *most* distributions the appropriate options are
2168 "mode=0620,gid=<gid of the "tty" group>".)
2170 136 block Mylex DAC960 PCI RAID controller; ninth controller
2171 0 = /dev/rd/c8d0 First disk, whole disk
2172 8 = /dev/rd/c8d1 Second disk, whole disk
2173 ...
2174 248 = /dev/rd/c8d31 32nd disk, whole disk
2176 Partitions are handled as for major 48.
2178 137 block Mylex DAC960 PCI RAID controller; tenth controller
2179 0 = /dev/rd/c9d0 First disk, whole disk
2180 8 = /dev/rd/c9d1 Second disk, whole disk
2181 ...
2182 248 = /dev/rd/c9d31 32nd disk, whole disk
2184 Partitions are handled as for major 48.
2186 138 block Mylex DAC960 PCI RAID controller; eleventh controller
2187 0 = /dev/rd/c10d0 First disk, whole disk
2188 8 = /dev/rd/c10d1 Second disk, whole disk
2189 ...
2190 248 = /dev/rd/c10d31 32nd disk, whole disk
2192 Partitions are handled as for major 48.
2194 139 block Mylex DAC960 PCI RAID controller; twelfth controller
2195 0 = /dev/rd/c11d0 First disk, whole disk
2196 8 = /dev/rd/c11d1 Second disk, whole disk
2197 ...
2198 248 = /dev/rd/c11d31 32nd disk, whole disk
2200 Partitions are handled as for major 48.
2202 140 block Mylex DAC960 PCI RAID controller; thirteenth controller
2203 0 = /dev/rd/c12d0 First disk, whole disk
2204 8 = /dev/rd/c12d1 Second disk, whole disk
2205 ...
2206 248 = /dev/rd/c12d31 32nd disk, whole disk
2208 Partitions are handled as for major 48.
2210 141 block Mylex DAC960 PCI RAID controller; fourteenth controller
2211 0 = /dev/rd/c13d0 First disk, whole disk
2212 8 = /dev/rd/c13d1 Second disk, whole disk
2213 ...
2214 248 = /dev/rd/c13d31 32nd disk, whole disk
2216 Partitions are handled as for major 48.
2218 142 block Mylex DAC960 PCI RAID controller; fifteenth controller
2219 0 = /dev/rd/c14d0 First disk, whole disk
2220 8 = /dev/rd/c14d1 Second disk, whole disk
2221 ...
2222 248 = /dev/rd/c14d31 32nd disk, whole disk
2224 Partitions are handled as for major 48.
2226 143 block Mylex DAC960 PCI RAID controller; sixteenth controller
2227 0 = /dev/rd/c15d0 First disk, whole disk
2228 8 = /dev/rd/c15d1 Second disk, whole disk
2229 ...
2230 248 = /dev/rd/c15d31 32nd disk, whole disk
2232 Partitions are handled as for major 48.
2234 144 char Encapsulated PPP
2235 0 = /dev/pppox0 First PPP over Ethernet
2236 ...
2237 63 = /dev/pppox63 64th PPP over Ethernet
2239 This is primarily used for ADSL.
2241 The SST 5136-DN DeviceNet interface driver has been
2242 relocated to major 183 due to an unfortunate conflict.
2244 144 block Expansion Area #1 for more non-device (e.g. NFS) mounts
2245 0 = mounted device 256
2246 255 = mounted device 511
2248 145 char SAM9407-based soundcard
2249 0 = /dev/sam0_mixer
2250 1 = /dev/sam0_sequencer
2251 2 = /dev/sam0_midi00
2252 3 = /dev/sam0_dsp
2253 4 = /dev/sam0_audio
2254 6 = /dev/sam0_sndstat
2255 18 = /dev/sam0_midi01
2256 34 = /dev/sam0_midi02
2257 50 = /dev/sam0_midi03
2258 64 = /dev/sam1_mixer
2259 ...
2260 128 = /dev/sam2_mixer
2261 ...
2262 192 = /dev/sam3_mixer
2263 ...
2265 Device functions match OSS, but offer a number of
2266 addons, which are sam9407 specific. OSS can be
2267 operated simultaneously, taking care of the codec.
2269 145 block Expansion Area #2 for more non-device (e.g. NFS) mounts
2270 0 = mounted device 512
2271 255 = mounted device 767
2273 146 char SYSTRAM SCRAMNet mirrored-memory network
2274 0 = /dev/scramnet0 First SCRAMNet device
2275 1 = /dev/scramnet1 Second SCRAMNet device
2276 ...
2278 146 block Expansion Area #3 for more non-device (e.g. NFS) mounts
2279 0 = mounted device 768
2280 255 = mounted device 1023
2282 147 char Aureal Semiconductor Vortex Audio device
2283 0 = /dev/aureal0 First Aureal Vortex
2284 1 = /dev/aureal1 Second Aureal Vortex
2285 ...
2287 147 block Distributed Replicated Block Device (DRBD)
2288 0 = /dev/drbd0 First DRBD device
2289 1 = /dev/drbd1 Second DRBD device
2290 ...
2292 148 char Technology Concepts serial card
2293 0 = /dev/ttyT0 First TCL port
2294 1 = /dev/ttyT1 Second TCL port
2295 ...
2297 149 char Technology Concepts serial card - alternate devices
2298 0 = /dev/cut0 Callout device for ttyT0
2299 1 = /dev/cut0 Callout device for ttyT1
2300 ...
2302 150 char Real-Time Linux FIFOs
2303 0 = /dev/rtf0 First RTLinux FIFO
2304 1 = /dev/rtf1 Second RTLinux FIFO
2305 ...
2307 151 char DPT I2O SmartRaid V controller
2308 0 = /dev/dpti0 First DPT I2O adapter
2309 1 = /dev/dpti1 Second DPT I2O adapter
2310 ...
2312 152 char EtherDrive Control Device
2313 0 = /dev/etherd/ctl Connect/Disconnect an EtherDrive
2314 1 = /dev/etherd/err Monitor errors
2315 2 = /dev/etherd/raw Raw AoE packet monitor
2317 152 block EtherDrive Block Devices
2318 0 = /dev/etherd/0 EtherDrive 0
2319 ...
2320 255 = /dev/etherd/255 EtherDrive 255
2322 153 char SPI Bus Interface (sometimes referred to as MicroWire)
2323 0 = /dev/spi0 First SPI device on the bus
2324 1 = /dev/spi1 Second SPI device on the bus
2325 ...
2326 15 = /dev/spi15 Sixteenth SPI device on the bus
2328 153 block Enhanced Metadisk RAID (EMD) storage units
2329 0 = /dev/emd/0 First unit
2330 1 = /dev/emd/0p1 Partition 1 on First unit
2331 2 = /dev/emd/0p2 Partition 2 on First unit
2332 ...
2333 15 = /dev/emd/0p15 Partition 15 on First unit
2335 16 = /dev/emd/1 Second unit
2336 32 = /dev/emd/2 Third unit
2337 ...
2338 240 = /dev/emd/15 Sixteenth unit
2340 Partitions are handled in the same way as for IDE
2341 disks (see major number 3) except that the limit on
2342 partitions is 15.
2344 154 char Specialix RIO serial card
2345 0 = /dev/ttySR0 First RIO port
2346 ...
2347 255 = /dev/ttySR255 256th RIO port
2349 155 char Specialix RIO serial card - alternate devices
2350 0 = /dev/cusr0 Callout device for ttySR0
2351 ...
2352 255 = /dev/cusr255 Callout device for ttySR255
2354 156 char Specialix RIO serial card
2355 0 = /dev/ttySR256 257th RIO port
2356 ...
2357 255 = /dev/ttySR511 512th RIO port
2359 157 char Specialix RIO serial card - alternate devices
2360 0 = /dev/cusr256 Callout device for ttySR256
2361 ...
2362 255 = /dev/cusr511 Callout device for ttySR511
2364 158 char Dialogic GammaLink fax driver
2365 0 = /dev/gfax0 GammaLink channel 0
2366 1 = /dev/gfax1 GammaLink channel 1
2367 ...
2369 159 char RESERVED
2371 159 block RESERVED
2373 160 char General Purpose Instrument Bus (GPIB)
2374 0 = /dev/gpib0 First GPIB bus
2375 1 = /dev/gpib1 Second GPIB bus
2376 ...
2378 160 block Carmel 8-port SATA Disks on First Controller
2379 0 = /dev/carmel/0 SATA disk 0 whole disk
2380 1 = /dev/carmel/0p1 SATA disk 0 partition 1
2381 ...
2382 31 = /dev/carmel/0p31 SATA disk 0 partition 31
2384 32 = /dev/carmel/1 SATA disk 1 whole disk
2385 64 = /dev/carmel/2 SATA disk 2 whole disk
2386 ...
2387 224 = /dev/carmel/7 SATA disk 7 whole disk
2389 Partitions are handled in the same way as for IDE
2390 disks (see major number 3) except that the limit on
2391 partitions is 31.
2393 161 char IrCOMM devices (IrDA serial/parallel emulation)
2394 0 = /dev/ircomm0 First IrCOMM device
2395 1 = /dev/ircomm1 Second IrCOMM device
2396 ...
2397 16 = /dev/irlpt0 First IrLPT device
2398 17 = /dev/irlpt1 Second IrLPT device
2399 ...
2401 161 block Carmel 8-port SATA Disks on Second Controller
2402 0 = /dev/carmel/8 SATA disk 8 whole disk
2403 1 = /dev/carmel/8p1 SATA disk 8 partition 1
2404 ...
2405 31 = /dev/carmel/8p31 SATA disk 8 partition 31
2407 32 = /dev/carmel/9 SATA disk 9 whole disk
2408 64 = /dev/carmel/10 SATA disk 10 whole disk
2409 ...
2410 224 = /dev/carmel/15 SATA disk 15 whole disk
2412 Partitions are handled in the same way as for IDE
2413 disks (see major number 3) except that the limit on
2414 partitions is 31.
2416 162 char Raw block device interface
2417 0 = /dev/rawctl Raw I/O control device
2418 1 = /dev/raw/raw1 First raw I/O device
2419 2 = /dev/raw/raw2 Second raw I/O device
2420 ...
2422 163 char
2424 164 char Chase Research AT/PCI-Fast serial card
2425 0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0
2426 ...
2427 15 = /dev/ttyCH15 AT/PCI-Fast board 0, port 15
2428 16 = /dev/ttyCH16 AT/PCI-Fast board 1, port 0
2429 ...
2430 31 = /dev/ttyCH31 AT/PCI-Fast board 1, port 15
2431 32 = /dev/ttyCH32 AT/PCI-Fast board 2, port 0
2432 ...
2433 47 = /dev/ttyCH47 AT/PCI-Fast board 2, port 15
2434 48 = /dev/ttyCH48 AT/PCI-Fast board 3, port 0
2435 ...
2436 63 = /dev/ttyCH63 AT/PCI-Fast board 3, port 15
2438 165 char Chase Research AT/PCI-Fast serial card - alternate devices
2439 0 = /dev/cuch0 Callout device for ttyCH0
2440 ...
2441 63 = /dev/cuch63 Callout device for ttyCH63
2443 166 char ACM USB modems
2444 0 = /dev/ttyACM0 First ACM modem
2445 1 = /dev/ttyACM1 Second ACM modem
2446 ...
2448 167 char ACM USB modems - alternate devices
2449 0 = /dev/cuacm0 Callout device for ttyACM0
2450 1 = /dev/cuacm1 Callout device for ttyACM1
2451 ...
2453 168 char Eracom CSA7000 PCI encryption adaptor
2454 0 = /dev/ecsa0 First CSA7000
2455 1 = /dev/ecsa1 Second CSA7000
2456 ...
2458 169 char Eracom CSA8000 PCI encryption adaptor
2459 0 = /dev/ecsa8-0 First CSA8000
2460 1 = /dev/ecsa8-1 Second CSA8000
2461 ...
2463 170 char AMI MegaRAC remote access controller
2464 0 = /dev/megarac0 First MegaRAC card
2465 1 = /dev/megarac1 Second MegaRAC card
2466 ...
2468 171 char Reserved for IEEE 1394 (Firewire)
2470 172 char Moxa Intellio serial card
2471 0 = /dev/ttyMX0 First Moxa port
2472 1 = /dev/ttyMX1 Second Moxa port
2473 ...
2474 127 = /dev/ttyMX127 128th Moxa port
2475 128 = /dev/moxactl Moxa control port
2477 173 char Moxa Intellio serial card - alternate devices
2478 0 = /dev/cumx0 Callout device for ttyMX0
2479 1 = /dev/cumx1 Callout device for ttyMX1
2480 ...
2481 127 = /dev/cumx127 Callout device for ttyMX127
2483 174 char SmartIO serial card
2484 0 = /dev/ttySI0 First SmartIO port
2485 1 = /dev/ttySI1 Second SmartIO port
2486 ...
2488 175 char SmartIO serial card - alternate devices
2489 0 = /dev/cusi0 Callout device for ttySI0
2490 1 = /dev/cusi1 Callout device for ttySI1
2491 ...
2493 176 char nCipher nFast PCI crypto accelerator
2494 0 = /dev/nfastpci0 First nFast PCI device
2495 1 = /dev/nfastpci1 First nFast PCI device
2496 ...
2498 177 char TI PCILynx memory spaces
2499 0 = /dev/pcilynx/aux0 AUX space of first PCILynx card
2500 ...
2501 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
2502 16 = /dev/pcilynx/rom0 ROM space of first PCILynx card
2503 ...
2504 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
2505 32 = /dev/pcilynx/ram0 RAM space of first PCILynx card
2506 ...
2507 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
2509 178 char Giganet cLAN1xxx virtual interface adapter
2510 0 = /dev/clanvi0 First cLAN adapter
2511 1 = /dev/clanvi1 Second cLAN adapter
2512 ...
2514 179 block MMC block devices
2515 0 = /dev/mmcblk0 First SD/MMC card
2516 1 = /dev/mmcblk0p1 First partition on first MMC card
2517 8 = /dev/mmcblk1 Second SD/MMC card
2518 ...
2520 The start of next SD/MMC card can be configured with
2521 CONFIG_MMC_BLOCK_MINORS, or overridden at boot/modprobe
2522 time using the mmcblk.perdev_minors option. That would
2523 bump the offset between each card to be the configured
2524 value instead of the default 8.
2526 179 char CCube DVXChip-based PCI products
2527 0 = /dev/dvxirq0 First DVX device
2528 1 = /dev/dvxirq1 Second DVX device
2529 ...
2531 180 char USB devices
2532 0 = /dev/usb/lp0 First USB printer
2533 ...
2534 15 = /dev/usb/lp15 16th USB printer
2535 48 = /dev/usb/scanner0 First USB scanner
2536 ...
2537 63 = /dev/usb/scanner15 16th USB scanner
2538 64 = /dev/usb/rio500 Diamond Rio 500
2539 65 = /dev/usb/usblcd USBLCD Interface (info@usblcd.de)
2540 66 = /dev/usb/cpad0 Synaptics cPad (mouse/LCD)
2541 96 = /dev/usb/hiddev0 1st USB HID device
2542 ...
2543 111 = /dev/usb/hiddev15 16th USB HID device
2544 112 = /dev/usb/auer0 1st auerswald ISDN device
2545 ...
2546 127 = /dev/usb/auer15 16th auerswald ISDN device
2547 128 = /dev/usb/brlvgr0 First Braille Voyager device
2548 ...
2549 131 = /dev/usb/brlvgr3 Fourth Braille Voyager device
2550 132 = /dev/usb/idmouse ID Mouse (fingerprint scanner) device
2551 133 = /dev/usb/sisusbvga1 First SiSUSB VGA device
2552 ...
2553 140 = /dev/usb/sisusbvga8 Eighth SISUSB VGA device
2554 144 = /dev/usb/lcd USB LCD device
2555 160 = /dev/usb/legousbtower0 1st USB Legotower device
2556 ...
2557 175 = /dev/usb/legousbtower15 16th USB Legotower device
2558 176 = /dev/usb/usbtmc1 First USB TMC device
2559 ...
2560 191 = /dev/usb/usbtmc16 16th USB TMC device
2561 192 = /dev/usb/yurex1 First USB Yurex device
2562 ...
2563 209 = /dev/usb/yurex16 16th USB Yurex device
2564 240 = /dev/usb/dabusb0 First daubusb device
2565 ...
2566 243 = /dev/usb/dabusb3 Fourth dabusb device
2568 180 block USB block devices
2569 0 = /dev/uba First USB block device
2570 8 = /dev/ubb Second USB block device
2571 16 = /dev/ubc Third USB block device
2572 ...
2574 181 char Conrad Electronic parallel port radio clocks
2575 0 = /dev/pcfclock0 First Conrad radio clock
2576 1 = /dev/pcfclock1 Second Conrad radio clock
2577 ...
2579 182 char Picture Elements THR2 binarizer
2580 0 = /dev/pethr0 First THR2 board
2581 1 = /dev/pethr1 Second THR2 board
2582 ...
2584 183 char SST 5136-DN DeviceNet interface
2585 0 = /dev/ss5136dn0 First DeviceNet interface
2586 1 = /dev/ss5136dn1 Second DeviceNet interface
2587 ...
2589 This device used to be assigned to major number 144.
2590 It had to be moved due to an unfortunate conflict.
2592 184 char Picture Elements' video simulator/sender
2593 0 = /dev/pevss0 First sender board
2594 1 = /dev/pevss1 Second sender board
2595 ...
2597 185 char InterMezzo high availability file system
2598 0 = /dev/intermezzo0 First cache manager
2599 1 = /dev/intermezzo1 Second cache manager
2600 ...
2602 See http://web.archive.org/web/20080115195241/
2603 http://inter-mezzo.org/index.html
2605 186 char Object-based storage control device
2606 0 = /dev/obd0 First obd control device
2607 1 = /dev/obd1 Second obd control device
2608 ...
2610 See ftp://ftp.lustre.org/pub/obd for code and information.
2612 187 char DESkey hardware encryption device
2613 0 = /dev/deskey0 First DES key
2614 1 = /dev/deskey1 Second DES key
2615 ...
2617 188 char USB serial converters
2618 0 = /dev/ttyUSB0 First USB serial converter
2619 1 = /dev/ttyUSB1 Second USB serial converter
2620 ...
2622 189 char USB serial converters - alternate devices
2623 0 = /dev/cuusb0 Callout device for ttyUSB0
2624 1 = /dev/cuusb1 Callout device for ttyUSB1
2625 ...
2627 190 char Kansas City tracker/tuner card
2628 0 = /dev/kctt0 First KCT/T card
2629 1 = /dev/kctt1 Second KCT/T card
2630 ...
2632 191 char Reserved for PCMCIA
2634 192 char Kernel profiling interface
2635 0 = /dev/profile Profiling control device
2636 1 = /dev/profile0 Profiling device for CPU 0
2637 2 = /dev/profile1 Profiling device for CPU 1
2638 ...
2640 193 char Kernel event-tracing interface
2641 0 = /dev/trace Tracing control device
2642 1 = /dev/trace0 Tracing device for CPU 0
2643 2 = /dev/trace1 Tracing device for CPU 1
2644 ...
2646 194 char linVideoStreams (LINVS)
2647 0 = /dev/mvideo/status0 Video compression status
2648 1 = /dev/mvideo/stream0 Video stream
2649 2 = /dev/mvideo/frame0 Single compressed frame
2650 3 = /dev/mvideo/rawframe0 Raw uncompressed frame
2651 4 = /dev/mvideo/codec0 Direct codec access
2652 5 = /dev/mvideo/video4linux0 Video4Linux compatibility
2654 16 = /dev/mvideo/status1 Second device
2655 ...
2656 32 = /dev/mvideo/status2 Third device
2657 ...
2658 ...
2659 240 = /dev/mvideo/status15 16th device
2660 ...
2662 195 char Nvidia graphics devices
2663 0 = /dev/nvidia0 First Nvidia card
2664 1 = /dev/nvidia1 Second Nvidia card
2665 ...
2666 255 = /dev/nvidiactl Nvidia card control device
2668 196 char Tormenta T1 card
2669 0 = /dev/tor/0 Master control channel for all cards
2670 1 = /dev/tor/1 First DS0
2671 2 = /dev/tor/2 Second DS0
2672 ...
2673 48 = /dev/tor/48 48th DS0
2674 49 = /dev/tor/49 First pseudo-channel
2675 50 = /dev/tor/50 Second pseudo-channel
2676 ...
2678 197 char OpenTNF tracing facility
2679 0 = /dev/tnf/t0 Trace 0 data extraction
2680 1 = /dev/tnf/t1 Trace 1 data extraction
2681 ...
2682 128 = /dev/tnf/status Tracing facility status
2683 130 = /dev/tnf/trace Tracing device
2685 198 char Total Impact TPMP2 quad coprocessor PCI card
2686 0 = /dev/tpmp2/0 First card
2687 1 = /dev/tpmp2/1 Second card
2688 ...
2690 199 char Veritas volume manager (VxVM) volumes
2691 0 = /dev/vx/rdsk/*/* First volume
2692 1 = /dev/vx/rdsk/*/* Second volume
2693 ...
2695 199 block Veritas volume manager (VxVM) volumes
2696 0 = /dev/vx/dsk/*/* First volume
2697 1 = /dev/vx/dsk/*/* Second volume
2698 ...
2700 The namespace in these directories is maintained by
2701 the user space VxVM software.
2703 200 char Veritas VxVM configuration interface
2704 0 = /dev/vx/config Configuration access node
2705 1 = /dev/vx/trace Volume i/o trace access node
2706 2 = /dev/vx/iod Volume i/o daemon access node
2707 3 = /dev/vx/info Volume information access node
2708 4 = /dev/vx/task Volume tasks access node
2709 5 = /dev/vx/taskmon Volume tasks monitor daemon
2711 201 char Veritas VxVM dynamic multipathing driver
2712 0 = /dev/vx/rdmp/* First multipath device
2713 1 = /dev/vx/rdmp/* Second multipath device
2714 ...
2715 201 block Veritas VxVM dynamic multipathing driver
2716 0 = /dev/vx/dmp/* First multipath device
2717 1 = /dev/vx/dmp/* Second multipath device
2718 ...
2720 The namespace in these directories is maintained by
2721 the user space VxVM software.
2723 202 char CPU model-specific registers
2724 0 = /dev/cpu/0/msr MSRs on CPU 0
2725 1 = /dev/cpu/1/msr MSRs on CPU 1
2726 ...
2728 202 block Xen Virtual Block Device
2729 0 = /dev/xvda First Xen VBD whole disk
2730 16 = /dev/xvdb Second Xen VBD whole disk
2731 32 = /dev/xvdc Third Xen VBD whole disk
2732 ...
2733 240 = /dev/xvdp Sixteenth Xen VBD whole disk
2735 Partitions are handled in the same way as for IDE
2736 disks (see major number 3) except that the limit on
2737 partitions is 15.
2739 203 char CPU CPUID information
2740 0 = /dev/cpu/0/cpuid CPUID on CPU 0
2741 1 = /dev/cpu/1/cpuid CPUID on CPU 1
2742 ...
2744 204 char Low-density serial ports
2745 0 = /dev/ttyLU0 LinkUp Systems L72xx UART - port 0
2746 1 = /dev/ttyLU1 LinkUp Systems L72xx UART - port 1
2747 2 = /dev/ttyLU2 LinkUp Systems L72xx UART - port 2
2748 3 = /dev/ttyLU3 LinkUp Systems L72xx UART - port 3
2749 4 = /dev/ttyFB0 Intel Footbridge (ARM)
2750 5 = /dev/ttySA0 StrongARM builtin serial port 0
2751 6 = /dev/ttySA1 StrongARM builtin serial port 1
2752 7 = /dev/ttySA2 StrongARM builtin serial port 2
2753 8 = /dev/ttySC0 SCI serial port (SuperH) - port 0
2754 9 = /dev/ttySC1 SCI serial port (SuperH) - port 1
2755 10 = /dev/ttySC2 SCI serial port (SuperH) - port 2
2756 11 = /dev/ttySC3 SCI serial port (SuperH) - port 3
2757 12 = /dev/ttyFW0 Firmware console - port 0
2758 13 = /dev/ttyFW1 Firmware console - port 1
2759 14 = /dev/ttyFW2 Firmware console - port 2
2760 15 = /dev/ttyFW3 Firmware console - port 3
2761 16 = /dev/ttyAM0 ARM "AMBA" serial port 0
2762 ...
2763 31 = /dev/ttyAM15 ARM "AMBA" serial port 15
2764 32 = /dev/ttyDB0 DataBooster serial port 0
2765 ...
2766 39 = /dev/ttyDB7 DataBooster serial port 7
2767 40 = /dev/ttySG0 SGI Altix console port
2768 41 = /dev/ttySMX0 Motorola i.MX - port 0
2769 42 = /dev/ttySMX1 Motorola i.MX - port 1
2770 43 = /dev/ttySMX2 Motorola i.MX - port 2
2771 44 = /dev/ttyMM0 Marvell MPSC - port 0
2772 45 = /dev/ttyMM1 Marvell MPSC - port 1
2773 46 = /dev/ttyCPM0 PPC CPM (SCC or SMC) - port 0
2774 ...
2775 47 = /dev/ttyCPM5 PPC CPM (SCC or SMC) - port 5
2776 50 = /dev/ttyIOC0 Altix serial card
2777 ...
2778 81 = /dev/ttyIOC31 Altix serial card
2779 82 = /dev/ttyVR0 NEC VR4100 series SIU
2780 83 = /dev/ttyVR1 NEC VR4100 series DSIU
2781 84 = /dev/ttyIOC84 Altix ioc4 serial card
2782 ...
2783 115 = /dev/ttyIOC115 Altix ioc4 serial card
2784 116 = /dev/ttySIOC0 Altix ioc3 serial card
2785 ...
2786 147 = /dev/ttySIOC31 Altix ioc3 serial card
2787 148 = /dev/ttyPSC0 PPC PSC - port 0
2788 ...
2789 153 = /dev/ttyPSC5 PPC PSC - port 5
2790 154 = /dev/ttyAT0 ATMEL serial port 0
2791 ...
2792 169 = /dev/ttyAT15 ATMEL serial port 15
2793 170 = /dev/ttyNX0 Hilscher netX serial port 0
2794 ...
2795 185 = /dev/ttyNX15 Hilscher netX serial port 15
2796 186 = /dev/ttyJ0 JTAG1 DCC protocol based serial port emulation
2797 187 = /dev/ttyUL0 Xilinx uartlite - port 0
2798 ...
2799 190 = /dev/ttyUL3 Xilinx uartlite - port 3
2800 191 = /dev/xvc0 Xen virtual console - port 0
2801 192 = /dev/ttyPZ0 pmac_zilog - port 0
2802 ...
2803 195 = /dev/ttyPZ3 pmac_zilog - port 3
2804 196 = /dev/ttyTX0 TX39/49 serial port 0
2805 ...
2806 204 = /dev/ttyTX7 TX39/49 serial port 7
2807 205 = /dev/ttySC0 SC26xx serial port 0
2808 206 = /dev/ttySC1 SC26xx serial port 1
2809 207 = /dev/ttySC2 SC26xx serial port 2
2810 208 = /dev/ttySC3 SC26xx serial port 3
2811 209 = /dev/ttyMAX0 MAX3100 serial port 0
2812 210 = /dev/ttyMAX1 MAX3100 serial port 1
2813 211 = /dev/ttyMAX2 MAX3100 serial port 2
2814 212 = /dev/ttyMAX3 MAX3100 serial port 3
2816 205 char Low-density serial ports (alternate device)
2817 0 = /dev/culu0 Callout device for ttyLU0
2818 1 = /dev/culu1 Callout device for ttyLU1
2819 2 = /dev/culu2 Callout device for ttyLU2
2820 3 = /dev/culu3 Callout device for ttyLU3
2821 4 = /dev/cufb0 Callout device for ttyFB0
2822 5 = /dev/cusa0 Callout device for ttySA0
2823 6 = /dev/cusa1 Callout device for ttySA1
2824 7 = /dev/cusa2 Callout device for ttySA2
2825 8 = /dev/cusc0 Callout device for ttySC0
2826 9 = /dev/cusc1 Callout device for ttySC1
2827 10 = /dev/cusc2 Callout device for ttySC2
2828 11 = /dev/cusc3 Callout device for ttySC3
2829 12 = /dev/cufw0 Callout device for ttyFW0
2830 13 = /dev/cufw1 Callout device for ttyFW1
2831 14 = /dev/cufw2 Callout device for ttyFW2
2832 15 = /dev/cufw3 Callout device for ttyFW3
2833 16 = /dev/cuam0 Callout device for ttyAM0
2834 ...
2835 31 = /dev/cuam15 Callout device for ttyAM15
2836 32 = /dev/cudb0 Callout device for ttyDB0
2837 ...
2838 39 = /dev/cudb7 Callout device for ttyDB7
2839 40 = /dev/cusg0 Callout device for ttySG0
2840 41 = /dev/ttycusmx0 Callout device for ttySMX0
2841 42 = /dev/ttycusmx1 Callout device for ttySMX1
2842 43 = /dev/ttycusmx2 Callout device for ttySMX2
2843 46 = /dev/cucpm0 Callout device for ttyCPM0
2844 ...
2845 49 = /dev/cucpm5 Callout device for ttyCPM5
2846 50 = /dev/cuioc40 Callout device for ttyIOC40
2847 ...
2848 81 = /dev/cuioc431 Callout device for ttyIOC431
2849 82 = /dev/cuvr0 Callout device for ttyVR0
2850 83 = /dev/cuvr1 Callout device for ttyVR1
2852 206 char OnStream SC-x0 tape devices
2853 0 = /dev/osst0 First OnStream SCSI tape, mode 0
2854 1 = /dev/osst1 Second OnStream SCSI tape, mode 0
2855 ...
2856 32 = /dev/osst0l First OnStream SCSI tape, mode 1
2857 33 = /dev/osst1l Second OnStream SCSI tape, mode 1
2858 ...
2859 64 = /dev/osst0m First OnStream SCSI tape, mode 2
2860 65 = /dev/osst1m Second OnStream SCSI tape, mode 2
2861 ...
2862 96 = /dev/osst0a First OnStream SCSI tape, mode 3
2863 97 = /dev/osst1a Second OnStream SCSI tape, mode 3
2864 ...
2865 128 = /dev/nosst0 No rewind version of /dev/osst0
2866 129 = /dev/nosst1 No rewind version of /dev/osst1
2867 ...
2868 160 = /dev/nosst0l No rewind version of /dev/osst0l
2869 161 = /dev/nosst1l No rewind version of /dev/osst1l
2870 ...
2871 192 = /dev/nosst0m No rewind version of /dev/osst0m
2872 193 = /dev/nosst1m No rewind version of /dev/osst1m
2873 ...
2874 224 = /dev/nosst0a No rewind version of /dev/osst0a
2875 225 = /dev/nosst1a No rewind version of /dev/osst1a
2876 ...
2878 The OnStream SC-x0 SCSI tapes do not support the
2879 standard SCSI SASD command set and therefore need
2880 their own driver "osst". Note that the IDE, USB (and
2881 maybe ParPort) versions may be driven via ide-scsi or
2882 usb-storage SCSI emulation and this osst device and
2883 driver as well. The ADR-x0 drives are QIC-157
2884 compliant and don't need osst.
2886 207 char Compaq ProLiant health feature indicate
2887 0 = /dev/cpqhealth/cpqw Redirector interface
2888 1 = /dev/cpqhealth/crom EISA CROM
2889 2 = /dev/cpqhealth/cdt Data Table
2890 3 = /dev/cpqhealth/cevt Event Log
2891 4 = /dev/cpqhealth/casr Automatic Server Recovery
2892 5 = /dev/cpqhealth/cecc ECC Memory
2893 6 = /dev/cpqhealth/cmca Machine Check Architecture
2894 7 = /dev/cpqhealth/ccsm Deprecated CDT
2895 8 = /dev/cpqhealth/cnmi NMI Handling
2896 9 = /dev/cpqhealth/css Sideshow Management
2897 10 = /dev/cpqhealth/cram CMOS interface
2898 11 = /dev/cpqhealth/cpci PCI IRQ interface
2900 208 char User space serial ports
2901 0 = /dev/ttyU0 First user space serial port
2902 1 = /dev/ttyU1 Second user space serial port
2903 ...
2905 209 char User space serial ports (alternate devices)
2906 0 = /dev/cuu0 Callout device for ttyU0
2907 1 = /dev/cuu1 Callout device for ttyU1
2908 ...
2910 210 char SBE, Inc. sync/async serial card
2911 0 = /dev/sbei/wxcfg0 Configuration device for board 0
2912 1 = /dev/sbei/dld0 Download device for board 0
2913 2 = /dev/sbei/wan00 WAN device, port 0, board 0
2914 3 = /dev/sbei/wan01 WAN device, port 1, board 0
2915 4 = /dev/sbei/wan02 WAN device, port 2, board 0
2916 5 = /dev/sbei/wan03 WAN device, port 3, board 0
2917 6 = /dev/sbei/wanc00 WAN clone device, port 0, board 0
2918 7 = /dev/sbei/wanc01 WAN clone device, port 1, board 0
2919 8 = /dev/sbei/wanc02 WAN clone device, port 2, board 0
2920 9 = /dev/sbei/wanc03 WAN clone device, port 3, board 0
2921 10 = /dev/sbei/wxcfg1 Configuration device for board 1
2922 11 = /dev/sbei/dld1 Download device for board 1
2923 12 = /dev/sbei/wan10 WAN device, port 0, board 1
2924 13 = /dev/sbei/wan11 WAN device, port 1, board 1
2925 14 = /dev/sbei/wan12 WAN device, port 2, board 1
2926 15 = /dev/sbei/wan13 WAN device, port 3, board 1
2927 16 = /dev/sbei/wanc10 WAN clone device, port 0, board 1
2928 17 = /dev/sbei/wanc11 WAN clone device, port 1, board 1
2929 18 = /dev/sbei/wanc12 WAN clone device, port 2, board 1
2930 19 = /dev/sbei/wanc13 WAN clone device, port 3, board 1
2931 ...
2933 Yes, each board is really spaced 10 (decimal) apart.
2935 211 char Addinum CPCI1500 digital I/O card
2936 0 = /dev/addinum/cpci1500/0 First CPCI1500 card
2937 1 = /dev/addinum/cpci1500/1 Second CPCI1500 card
2938 ...
2940 212 char LinuxTV.org DVB driver subsystem
2941 0 = /dev/dvb/adapter0/video0 first video decoder of first card
2942 1 = /dev/dvb/adapter0/audio0 first audio decoder of first card
2943 2 = /dev/dvb/adapter0/sec0 (obsolete/unused)
2944 3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2945 4 = /dev/dvb/adapter0/demux0 first demux device of first card
2946 5 = /dev/dvb/adapter0/dvr0 first digital video recoder device of first card
2947 6 = /dev/dvb/adapter0/ca0 first common access port of first card
2948 7 = /dev/dvb/adapter0/net0 first network device of first card
2949 8 = /dev/dvb/adapter0/osd0 first on-screen-display device of first card
2950 9 = /dev/dvb/adapter0/video1 second video decoder of first card
2951 ...
2952 64 = /dev/dvb/adapter1/video0 first video decoder of second card
2953 ...
2954 128 = /dev/dvb/adapter2/video0 first video decoder of third card
2955 ...
2956 196 = /dev/dvb/adapter3/video0 first video decoder of fourth card
2958 216 char Bluetooth RFCOMM TTY devices
2959 0 = /dev/rfcomm0 First Bluetooth RFCOMM TTY device
2960 1 = /dev/rfcomm1 Second Bluetooth RFCOMM TTY device
2961 ...
2963 217 char Bluetooth RFCOMM TTY devices (alternate devices)
2964 0 = /dev/curf0 Callout device for rfcomm0
2965 1 = /dev/curf1 Callout device for rfcomm1
2966 ...
2968 218 char The Logical Company bus Unibus/Qbus adapters
2969 0 = /dev/logicalco/bci/0 First bus adapter
2970 1 = /dev/logicalco/bci/1 First bus adapter
2971 ...
2973 219 char The Logical Company DCI-1300 digital I/O card
2974 0 = /dev/logicalco/dci1300/0 First DCI-1300 card
2975 1 = /dev/logicalco/dci1300/1 Second DCI-1300 card
2976 ...
2978 220 char Myricom Myrinet "GM" board
2979 0 = /dev/myricom/gm0 First Myrinet GM board
2980 1 = /dev/myricom/gmp0 First board "root access"
2981 2 = /dev/myricom/gm1 Second Myrinet GM board
2982 3 = /dev/myricom/gmp1 Second board "root access"
2983 ...
2985 221 char VME bus
2986 0 = /dev/bus/vme/m0 First master image
2987 1 = /dev/bus/vme/m1 Second master image
2988 2 = /dev/bus/vme/m2 Third master image
2989 3 = /dev/bus/vme/m3 Fourth master image
2990 4 = /dev/bus/vme/s0 First slave image
2991 5 = /dev/bus/vme/s1 Second slave image
2992 6 = /dev/bus/vme/s2 Third slave image
2993 7 = /dev/bus/vme/s3 Fourth slave image
2994 8 = /dev/bus/vme/ctl Control
2996 It is expected that all VME bus drivers will use the
2997 same interface. For interface documentation see
2998 http://www.vmelinux.org/.
3000 224 char A2232 serial card
3001 0 = /dev/ttyY0 First A2232 port
3002 1 = /dev/ttyY1 Second A2232 port
3003 ...
3005 225 char A2232 serial card (alternate devices)
3006 0 = /dev/cuy0 Callout device for ttyY0
3007 1 = /dev/cuy1 Callout device for ttyY1
3008 ...
3010 226 char Direct Rendering Infrastructure (DRI)
3011 0 = /dev/dri/card0 First graphics card
3012 1 = /dev/dri/card1 Second graphics card
3013 ...
3015 227 char IBM 3270 terminal Unix tty access
3016 1 = /dev/3270/tty1 First 3270 terminal
3017 2 = /dev/3270/tty2 Seconds 3270 terminal
3018 ...
3020 228 char IBM 3270 terminal block-mode access
3021 0 = /dev/3270/tub Controlling interface
3022 1 = /dev/3270/tub1 First 3270 terminal
3023 2 = /dev/3270/tub2 Second 3270 terminal
3024 ...
3026 229 char IBM iSeries/pSeries virtual console
3027 0 = /dev/hvc0 First console port
3028 1 = /dev/hvc1 Second console port
3029 ...
3031 230 char IBM iSeries virtual tape
3032 0 = /dev/iseries/vt0 First virtual tape, mode 0
3033 1 = /dev/iseries/vt1 Second virtual tape, mode 0
3034 ...
3035 32 = /dev/iseries/vt0l First virtual tape, mode 1
3036 33 = /dev/iseries/vt1l Second virtual tape, mode 1
3037 ...
3038 64 = /dev/iseries/vt0m First virtual tape, mode 2
3039 65 = /dev/iseries/vt1m Second virtual tape, mode 2
3040 ...
3041 96 = /dev/iseries/vt0a First virtual tape, mode 3
3042 97 = /dev/iseries/vt1a Second virtual tape, mode 3
3043 ...
3044 128 = /dev/iseries/nvt0 First virtual tape, mode 0, no rewind
3045 129 = /dev/iseries/nvt1 Second virtual tape, mode 0, no rewind
3046 ...
3047 160 = /dev/iseries/nvt0l First virtual tape, mode 1, no rewind
3048 161 = /dev/iseries/nvt1l Second virtual tape, mode 1, no rewind
3049 ...
3050 192 = /dev/iseries/nvt0m First virtual tape, mode 2, no rewind
3051 193 = /dev/iseries/nvt1m Second virtual tape, mode 2, no rewind
3052 ...
3053 224 = /dev/iseries/nvt0a First virtual tape, mode 3, no rewind
3054 225 = /dev/iseries/nvt1a Second virtual tape, mode 3, no rewind
3055 ...
3057 "No rewind" refers to the omission of the default
3058 automatic rewind on device close. The MTREW or MTOFFL
3059 ioctl()'s can be used to rewind the tape regardless of
3060 the device used to access it.
3062 231 char InfiniBand
3063 0 = /dev/infiniband/umad0
3064 1 = /dev/infiniband/umad1
3065 ...
3066 63 = /dev/infiniband/umad63 63rd InfiniBandMad device
3067 64 = /dev/infiniband/issm0 First InfiniBand IsSM device
3068 65 = /dev/infiniband/issm1 Second InfiniBand IsSM device
3069 ...
3070 127 = /dev/infiniband/issm63 63rd InfiniBand IsSM device
3071 128 = /dev/infiniband/uverbs0 First InfiniBand verbs device
3072 129 = /dev/infiniband/uverbs1 Second InfiniBand verbs device
3073 ...
3074 159 = /dev/infiniband/uverbs31 31st InfiniBand verbs device
3076 232 char Biometric Devices
3077 0 = /dev/biometric/sensor0/fingerprint first fingerprint sensor on first device
3078 1 = /dev/biometric/sensor0/iris first iris sensor on first device
3079 2 = /dev/biometric/sensor0/retina first retina sensor on first device
3080 3 = /dev/biometric/sensor0/voiceprint first voiceprint sensor on first device
3081 4 = /dev/biometric/sensor0/facial first facial sensor on first device
3082 5 = /dev/biometric/sensor0/hand first hand sensor on first device
3083 ...
3084 10 = /dev/biometric/sensor1/fingerprint first fingerprint sensor on second device
3085 ...
3086 20 = /dev/biometric/sensor2/fingerprint first fingerprint sensor on third device
3087 ...
3089 233 char PathScale InfiniPath interconnect
3090 0 = /dev/ipath Primary device for programs (any unit)
3091 1 = /dev/ipath0 Access specifically to unit 0
3092 2 = /dev/ipath1 Access specifically to unit 1
3093 ...
3094 4 = /dev/ipath3 Access specifically to unit 3
3095 129 = /dev/ipath_sma Device used by Subnet Management Agent
3096 130 = /dev/ipath_diag Device used by diagnostics programs
3098 234-239 UNASSIGNED
3100 240-254 char LOCAL/EXPERIMENTAL USE
3102 240-254 block LOCAL/EXPERIMENTAL USE
3103 Allocated for local/experimental use. For devices not
3104 assigned official numbers, these ranges should be
3105 used in order to avoid conflicting with future assignments.
3107 255 char RESERVED
3109 255 block RESERVED
3111 This major is reserved to assist the expansion to a
3112 larger number space. No device nodes with this major
3113 should ever be created on the filesystem.
3114 (This is probably not true anymore, but I'll leave it
3115 for now /Torben)
3117 ---LARGE MAJORS!!!!!---
3119 256 char Equinox SST multi-port serial boards
3120 0 = /dev/ttyEQ0 First serial port on first Equinox SST board
3121 127 = /dev/ttyEQ127 Last serial port on first Equinox SST board
3122 128 = /dev/ttyEQ128 First serial port on second Equinox SST board
3123 ...
3124 1027 = /dev/ttyEQ1027 Last serial port on eighth Equinox SST board
3126 256 block Resident Flash Disk Flash Translation Layer
3127 0 = /dev/rfda First RFD FTL layer
3128 16 = /dev/rfdb Second RFD FTL layer
3129 ...
3130 240 = /dev/rfdp 16th RFD FTL layer
3132 257 char Phoenix Technologies Cryptographic Services Driver
3133 0 = /dev/ptlsec Crypto Services Driver
3135 257 block SSFDC Flash Translation Layer filesystem
3136 0 = /dev/ssfdca First SSFDC layer
3137 8 = /dev/ssfdcb Second SSFDC layer
3138 16 = /dev/ssfdcc Third SSFDC layer
3139 24 = /dev/ssfdcd 4th SSFDC layer
3140 32 = /dev/ssfdce 5th SSFDC layer
3141 40 = /dev/ssfdcf 6th SSFDC layer
3142 48 = /dev/ssfdcg 7th SSFDC layer
3143 56 = /dev/ssfdch 8th SSFDC layer
3145 258 block ROM/Flash read-only translation layer
3146 0 = /dev/blockrom0 First ROM card's translation layer interface
3147 1 = /dev/blockrom1 Second ROM card's translation layer interface
3148 ...
3150 259 block Block Extended Major
3151 Used dynamically to hold additional partition minor
3152 numbers and allow large numbers of partitions per device
3154 259 char FPGA configuration interfaces
3155 0 = /dev/icap0 First Xilinx internal configuration
3156 1 = /dev/icap1 Second Xilinx internal configuration
3158 260 char OSD (Object-based-device) SCSI Device
3159 0 = /dev/osd0 First OSD Device
3160 1 = /dev/osd1 Second OSD Device
3161 ...
3162 255 = /dev/osd255 256th OSD Device
3164 **** ADDITIONAL /dev DIRECTORY ENTRIES
3166 This section details additional entries that should or may exist in
3167 the /dev directory. It is preferred that symbolic links use the same
3168 form (absolute or relative) as is indicated here. Links are
3169 classified as "hard" or "symbolic" depending on the preferred type of
3170 link; if possible, the indicated type of link should be used.
3173 Compulsory links
3175 These links should exist on all systems:
3177 /dev/fd /proc/self/fd symbolic File descriptors
3178 /dev/stdin fd/0 symbolic stdin file descriptor
3179 /dev/stdout fd/1 symbolic stdout file descriptor
3180 /dev/stderr fd/2 symbolic stderr file descriptor
3181 /dev/nfsd socksys symbolic Required by iBCS-2
3182 /dev/X0R null symbolic Required by iBCS-2
3184 Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
3186 Recommended links
3188 It is recommended that these links exist on all systems:
3190 /dev/core /proc/kcore symbolic Backward compatibility
3191 /dev/ramdisk ram0 symbolic Backward compatibility
3192 /dev/ftape qft0 symbolic Backward compatibility
3193 /dev/bttv0 video0 symbolic Backward compatibility
3194 /dev/radio radio0 symbolic Backward compatibility
3195 /dev/i2o* /dev/i2o/* symbolic Backward compatibility
3196 /dev/scd? sr? hard Alternate SCSI CD-ROM name
3198 Locally defined links
3200 The following links may be established locally to conform to the
3201 configuration of the system. This is merely a tabulation of existing
3202 practice, and does not constitute a recommendation. However, if they
3203 exist, they should have the following uses.
3205 /dev/mouse mouse port symbolic Current mouse device
3206 /dev/tape tape device symbolic Current tape device
3207 /dev/cdrom CD-ROM device symbolic Current CD-ROM device
3208 /dev/cdwriter CD-writer symbolic Current CD-writer device
3209 /dev/scanner scanner symbolic Current scanner device
3210 /dev/modem modem port symbolic Current dialout device
3211 /dev/root root device symbolic Current root filesystem
3212 /dev/swap swap device symbolic Current swap device
3214 /dev/modem should not be used for a modem which supports dialin as
3215 well as dialout, as it tends to cause lock file problems. If it
3216 exists, /dev/modem should point to the appropriate primary TTY device
3217 (the use of the alternate callout devices is deprecated).
3219 For SCSI devices, /dev/tape and /dev/cdrom should point to the
3220 ``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
3221 /dev/cdwriter and /dev/scanner should point to the appropriate generic
3222 SCSI devices (/dev/sg*).
3224 /dev/mouse may point to a primary serial TTY device, a hardware mouse
3225 device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
3227 Sockets and pipes
3229 Non-transient sockets and named pipes may exist in /dev. Common entries are:
3231 /dev/printer socket lpd local socket
3232 /dev/log socket syslog local socket
3233 /dev/gpmdata socket gpm mouse multiplexer
3235 Mount points
3237 The following names are reserved for mounting special filesystems
3238 under /dev. These special filesystems provide kernel interfaces that
3239 cannot be provided with standard device nodes.
3241 /dev/pts devpts PTY slave filesystem
3242 /dev/shm tmpfs POSIX shared memory maintenance access
3244 **** TERMINAL DEVICES
3246 Terminal, or TTY devices are a special class of character devices. A
3247 terminal device is any device that could act as a controlling terminal
3248 for a session; this includes virtual consoles, serial ports, and
3249 pseudoterminals (PTYs).
3251 All terminal devices share a common set of capabilities known as line
3252 disciplines; these include the common terminal line discipline as well
3253 as SLIP and PPP modes.
3255 All terminal devices are named similarly; this section explains the
3256 naming and use of the various types of TTYs. Note that the naming
3257 conventions include several historical warts; some of these are
3258 Linux-specific, some were inherited from other systems, and some
3259 reflect Linux outgrowing a borrowed convention.
3261 A hash mark (#) in a device name is used here to indicate a decimal
3262 number without leading zeroes.
3264 Virtual consoles and the console device
3266 Virtual consoles are full-screen terminal displays on the system video
3267 monitor. Virtual consoles are named /dev/tty#, with numbering
3268 starting at /dev/tty1; /dev/tty0 is the current virtual console.
3269 /dev/tty0 is the device that should be used to access the system video
3270 card on those architectures for which the frame buffer devices
3271 (/dev/fb*) are not applicable. Do not use /dev/console
3272 for this purpose.
3274 The console device, /dev/console, is the device to which system
3275 messages should be sent, and on which logins should be permitted in
3276 single-user mode. Starting with Linux 2.1.71, /dev/console is managed
3277 by the kernel; for previous versions it should be a symbolic link to
3278 either /dev/tty0, a specific virtual console such as /dev/tty1, or to
3279 a serial port primary (tty*, not cu*) device, depending on the
3280 configuration of the system.
3282 Serial ports
3284 Serial ports are RS-232 serial ports and any device which simulates
3285 one, either in hardware (such as internal modems) or in software (such
3286 as the ISDN driver.) Under Linux, each serial ports has two device
3287 names, the primary or callin device and the alternate or callout one.
3288 Each kind of device is indicated by a different letter. For any
3289 letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
3290 respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
3291 correspond to /dev/cua# and /dev/cub#. In the future, it should be
3292 expected that multiple letters will be used; all letters will be upper
3293 case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
3294 "cu" device (e.g. /dev/cudp#).
3296 The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
3298 The alternate devices provide for kernel-based exclusion and somewhat
3299 different defaults than the primary devices. Their main purpose is to
3300 allow the use of serial ports with programs with no inherent or broken
3301 support for serial ports. Their use is deprecated, and they may be
3302 removed from a future version of Linux.
3304 Arbitration of serial ports is provided by the use of lock files with
3305 the names /var/lock/LCK..ttyX#. The contents of the lock file should
3306 be the PID of the locking process as an ASCII number.
3308 It is common practice to install links such as /dev/modem
3309 which point to serial ports. In order to ensure proper locking in the
3310 presence of these links, it is recommended that software chase
3311 symlinks and lock all possible names; additionally, it is recommended
3312 that a lock file be installed with the corresponding alternate
3313 device. In order to avoid deadlocks, it is recommended that the locks
3314 are acquired in the following order, and released in the reverse:
3316 1. The symbolic link name, if any (/var/lock/LCK..modem)
3317 2. The "tty" name (/var/lock/LCK..ttyS2)
3318 3. The alternate device name (/var/lock/LCK..cua2)
3320 In the case of nested symbolic links, the lock files should be
3321 installed in the order the symlinks are resolved.
3323 Under no circumstances should an application hold a lock while waiting
3324 for another to be released. In addition, applications which attempt
3325 to create lock files for the corresponding alternate device names
3326 should take into account the possibility of being used on a non-serial
3327 port TTY, for which no alternate device would exist.
3329 Pseudoterminals (PTYs)
3331 Pseudoterminals, or PTYs, are used to create login sessions or provide
3332 other capabilities requiring a TTY line discipline (including SLIP or
3333 PPP capability) to arbitrary data-generation processes. Each PTY has
3334 a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
3335 /dev/tty[p-za-e][0-9a-f]. The kernel arbitrates the use of PTYs by
3336 allowing each master side to be opened only once.
3338 Once the master side has been opened, the corresponding slave device
3339 can be used in the same manner as any TTY device. The master and
3340 slave devices are connected by the kernel, generating the equivalent
3341 of a bidirectional pipe with TTY capabilities.
3343 Recent versions of the Linux kernels and GNU libc contain support for
3344 the System V/Unix98 naming scheme for PTYs, which assigns a common
3345 device, /dev/ptmx, to all the masters (opening it will automatically
3346 give you a previously unassigned PTY) and a subdirectory, /dev/pts,
3347 for the slaves; the slaves are named with decimal integers (/dev/pts/#
3348 in our notation). This removes the problem of exhausting the
3349 namespace and enables the kernel to automatically create the device
3350 nodes for the slaves on demand using the "devpts" filesystem.