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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17 The LaTeX version of this document is no longer maintained.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26 The symbol {2.6} means the allocation is obsolete and scheduled for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, reads
102 export the buffered printk records.
103 12 = /dev/oldmem OBSOLETE - replaced by /proc/vmcore
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
412 196 = /dev/vfio/vfio VFIO userspace driver interface
413 198 = /dev/sexec Signed executable interface
414 199 = /dev/scanners/cuecat :CueCat barcode scanner
415 200 = /dev/net/tun TAP/TUN network device
416 201 = /dev/button/gulpb Transmeta GULP-B buttons
417 202 = /dev/emd/ctl Enhanced Metadisk RAID (EMD) control
418 203 = /dev/cuse Cuse (character device in user-space)
419 204 = /dev/video/em8300 EM8300 DVD decoder control
420 205 = /dev/video/em8300_mv EM8300 DVD decoder video
421 206 = /dev/video/em8300_ma EM8300 DVD decoder audio
422 207 = /dev/video/em8300_sp EM8300 DVD decoder subpicture
423 208 = /dev/compaq/cpqphpc Compaq PCI Hot Plug Controller
424 209 = /dev/compaq/cpqrid Compaq Remote Insight Driver
425 210 = /dev/impi/bt IMPI coprocessor block transfer
426 211 = /dev/impi/smic IMPI coprocessor stream interface
427 212 = /dev/watchdogs/0 First watchdog device
428 213 = /dev/watchdogs/1 Second watchdog device
429 214 = /dev/watchdogs/2 Third watchdog device
430 215 = /dev/watchdogs/3 Fourth watchdog device
431 216 = /dev/fujitsu/apanel Fujitsu/Siemens application panel
432 217 = /dev/ni/natmotn National Instruments Motion
433 218 = /dev/kchuid Inter-process chuid control
434 219 = /dev/modems/mwave MWave modem firmware upload
435 220 = /dev/mptctl Message passing technology (MPT) control
436 221 = /dev/mvista/hssdsi Montavista PICMG hot swap system driver
437 222 = /dev/mvista/hasi Montavista PICMG high availability
438 223 = /dev/input/uinput User level driver support for input
439 224 = /dev/tpm TCPA TPM driver
440 225 = /dev/pps Pulse Per Second driver
441 226 = /dev/systrace Systrace device
442 227 = /dev/mcelog X86_64 Machine Check Exception driver
443 228 = /dev/hpet HPET driver
444 229 = /dev/fuse Fuse (virtual filesystem in user-space)
445 230 = /dev/midishare MidiShare driver
446 231 = /dev/snapshot System memory snapshot device
447 232 = /dev/kvm Kernel-based virtual machine (hardware virtualization extensions)
448 233 = /dev/kmview View-OS A process with a view
449 234 = /dev/btrfs-control Btrfs control device
450 235 = /dev/autofs Autofs control device
451 236 = /dev/mapper/control Device-Mapper control device
452 237 = /dev/loop-control Loopback control device
453 238 = /dev/vhost-net Host kernel accelerator for virtio net
455 240-254 Reserved for local use
456 255 Reserved for MISC_DYNAMIC_MINOR
458 11 char Raw keyboard device (Linux/SPARC only)
459 0 = /dev/kbd Raw keyboard device
461 11 char Serial Mux device (Linux/PA-RISC only)
462 0 = /dev/ttyB0 First mux port
463 1 = /dev/ttyB1 Second mux port
464 ...
466 11 block SCSI CD-ROM devices
467 0 = /dev/scd0 First SCSI CD-ROM
468 1 = /dev/scd1 Second SCSI CD-ROM
469 ...
471 The prefix /dev/sr (instead of /dev/scd) has been deprecated.
473 12 char QIC-02 tape
474 2 = /dev/ntpqic11 QIC-11, no rewind-on-close
475 3 = /dev/tpqic11 QIC-11, rewind-on-close
476 4 = /dev/ntpqic24 QIC-24, no rewind-on-close
477 5 = /dev/tpqic24 QIC-24, rewind-on-close
478 6 = /dev/ntpqic120 QIC-120, no rewind-on-close
479 7 = /dev/tpqic120 QIC-120, rewind-on-close
480 8 = /dev/ntpqic150 QIC-150, no rewind-on-close
481 9 = /dev/tpqic150 QIC-150, rewind-on-close
483 The device names specified are proposed -- if there
484 are "standard" names for these devices, please let me know.
486 12 block
488 13 char Input core
489 0 = /dev/input/js0 First joystick
490 1 = /dev/input/js1 Second joystick
491 ...
492 32 = /dev/input/mouse0 First mouse
493 33 = /dev/input/mouse1 Second mouse
494 ...
495 63 = /dev/input/mice Unified mouse
496 64 = /dev/input/event0 First event queue
497 65 = /dev/input/event1 Second event queue
498 ...
500 Each device type has 5 bits (32 minors).
502 13 block Previously used for the XT disk (/dev/xdN)
503 Deleted in kernel v3.9.
505 14 char Open Sound System (OSS)
506 0 = /dev/mixer Mixer control
507 1 = /dev/sequencer Audio sequencer
508 2 = /dev/midi00 First MIDI port
509 3 = /dev/dsp Digital audio
510 4 = /dev/audio Sun-compatible digital audio
511 6 =
512 7 = /dev/audioctl SPARC audio control device
513 8 = /dev/sequencer2 Sequencer -- alternate device
514 16 = /dev/mixer1 Second soundcard mixer control
515 17 = /dev/patmgr0 Sequencer patch manager
516 18 = /dev/midi01 Second MIDI port
517 19 = /dev/dsp1 Second soundcard digital audio
518 20 = /dev/audio1 Second soundcard Sun digital audio
519 33 = /dev/patmgr1 Sequencer patch manager
520 34 = /dev/midi02 Third MIDI port
521 50 = /dev/midi03 Fourth MIDI port
523 14 block
525 15 char Joystick
526 0 = /dev/js0 First analog joystick
527 1 = /dev/js1 Second analog joystick
528 ...
529 128 = /dev/djs0 First digital joystick
530 129 = /dev/djs1 Second digital joystick
531 ...
532 15 block Sony CDU-31A/CDU-33A CD-ROM
533 0 = /dev/sonycd Sony CDU-31a CD-ROM
535 16 char Non-SCSI scanners
536 0 = /dev/gs4500 Genius 4500 handheld scanner
538 16 block GoldStar CD-ROM
539 0 = /dev/gscd GoldStar CD-ROM
541 17 char OBSOLETE (was Chase serial card)
542 0 = /dev/ttyH0 First Chase port
543 1 = /dev/ttyH1 Second Chase port
544 ...
545 17 block Optics Storage CD-ROM
546 0 = /dev/optcd Optics Storage CD-ROM
548 18 char OBSOLETE (was Chase serial card - alternate devices)
549 0 = /dev/cuh0 Callout device for ttyH0
550 1 = /dev/cuh1 Callout device for ttyH1
551 ...
552 18 block Sanyo CD-ROM
553 0 = /dev/sjcd Sanyo CD-ROM
555 19 char Cyclades serial card
556 0 = /dev/ttyC0 First Cyclades port
557 ...
558 31 = /dev/ttyC31 32nd Cyclades port
560 19 block "Double" compressed disk
561 0 = /dev/double0 First compressed disk
562 ...
563 7 = /dev/double7 Eighth compressed disk
564 128 = /dev/cdouble0 Mirror of first compressed disk
565 ...
566 135 = /dev/cdouble7 Mirror of eighth compressed disk
568 See the Double documentation for the meaning of the
569 mirror devices.
571 20 char Cyclades serial card - alternate devices
572 0 = /dev/cub0 Callout device for ttyC0
573 ...
574 31 = /dev/cub31 Callout device for ttyC31
576 20 block Hitachi CD-ROM (under development)
577 0 = /dev/hitcd Hitachi CD-ROM
579 21 char Generic SCSI access
580 0 = /dev/sg0 First generic SCSI device
581 1 = /dev/sg1 Second generic SCSI device
582 ...
584 Most distributions name these /dev/sga, /dev/sgb...;
585 this sets an unnecessary limit of 26 SCSI devices in
586 the system and is counter to standard Linux
587 device-naming practice.
589 21 block Acorn MFM hard drive interface
590 0 = /dev/mfma First MFM drive whole disk
591 64 = /dev/mfmb Second MFM drive whole disk
593 This device is used on the ARM-based Acorn RiscPC.
594 Partitions are handled the same way as for IDE disks
595 (see major number 3).
597 22 char Digiboard serial card
598 0 = /dev/ttyD0 First Digiboard port
599 1 = /dev/ttyD1 Second Digiboard port
600 ...
601 22 block Second IDE hard disk/CD-ROM interface
602 0 = /dev/hdc Master: whole disk (or CD-ROM)
603 64 = /dev/hdd Slave: whole disk (or CD-ROM)
605 Partitions are handled the same way as for the first
606 interface (see major number 3).
608 23 char Digiboard serial card - alternate devices
609 0 = /dev/cud0 Callout device for ttyD0
610 1 = /dev/cud1 Callout device for ttyD1
611 ...
612 23 block Mitsumi proprietary CD-ROM
613 0 = /dev/mcd Mitsumi CD-ROM
615 24 char Stallion serial card
616 0 = /dev/ttyE0 Stallion port 0 card 0
617 1 = /dev/ttyE1 Stallion port 1 card 0
618 ...
619 64 = /dev/ttyE64 Stallion port 0 card 1
620 65 = /dev/ttyE65 Stallion port 1 card 1
621 ...
622 128 = /dev/ttyE128 Stallion port 0 card 2
623 129 = /dev/ttyE129 Stallion port 1 card 2
624 ...
625 192 = /dev/ttyE192 Stallion port 0 card 3
626 193 = /dev/ttyE193 Stallion port 1 card 3
627 ...
628 24 block Sony CDU-535 CD-ROM
629 0 = /dev/cdu535 Sony CDU-535 CD-ROM
631 25 char Stallion serial card - alternate devices
632 0 = /dev/cue0 Callout device for ttyE0
633 1 = /dev/cue1 Callout device for ttyE1
634 ...
635 64 = /dev/cue64 Callout device for ttyE64
636 65 = /dev/cue65 Callout device for ttyE65
637 ...
638 128 = /dev/cue128 Callout device for ttyE128
639 129 = /dev/cue129 Callout device for ttyE129
640 ...
641 192 = /dev/cue192 Callout device for ttyE192
642 193 = /dev/cue193 Callout device for ttyE193
643 ...
644 25 block First Matsushita (Panasonic/SoundBlaster) CD-ROM
645 0 = /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0
646 1 = /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1
647 2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
648 3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
650 26 char
652 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
653 0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
654 1 = /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1
655 2 = /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2
656 3 = /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3
658 27 char QIC-117 tape
659 0 = /dev/qft0 Unit 0, rewind-on-close
660 1 = /dev/qft1 Unit 1, rewind-on-close
661 2 = /dev/qft2 Unit 2, rewind-on-close
662 3 = /dev/qft3 Unit 3, rewind-on-close
663 4 = /dev/nqft0 Unit 0, no rewind-on-close
664 5 = /dev/nqft1 Unit 1, no rewind-on-close
665 6 = /dev/nqft2 Unit 2, no rewind-on-close
666 7 = /dev/nqft3 Unit 3, no rewind-on-close
667 16 = /dev/zqft0 Unit 0, rewind-on-close, compression
668 17 = /dev/zqft1 Unit 1, rewind-on-close, compression
669 18 = /dev/zqft2 Unit 2, rewind-on-close, compression
670 19 = /dev/zqft3 Unit 3, rewind-on-close, compression
671 20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression
672 21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression
673 22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression
674 23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression
675 32 = /dev/rawqft0 Unit 0, rewind-on-close, no file marks
676 33 = /dev/rawqft1 Unit 1, rewind-on-close, no file marks
677 34 = /dev/rawqft2 Unit 2, rewind-on-close, no file marks
678 35 = /dev/rawqft3 Unit 3, rewind-on-close, no file marks
679 36 = /dev/nrawqft0 Unit 0, no rewind-on-close, no file marks
680 37 = /dev/nrawqft1 Unit 1, no rewind-on-close, no file marks
681 38 = /dev/nrawqft2 Unit 2, no rewind-on-close, no file marks
682 39 = /dev/nrawqft3 Unit 3, no rewind-on-close, no file marks
684 27 block Third Matsushita (Panasonic/SoundBlaster) CD-ROM
685 0 = /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0
686 1 = /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1
687 2 = /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2
688 3 = /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3
690 28 char Stallion serial card - card programming
691 0 = /dev/staliomem0 First Stallion card I/O memory
692 1 = /dev/staliomem1 Second Stallion card I/O memory
693 2 = /dev/staliomem2 Third Stallion card I/O memory
694 3 = /dev/staliomem3 Fourth Stallion card I/O memory
696 28 char Atari SLM ACSI laser printer (68k/Atari)
697 0 = /dev/slm0 First SLM laser printer
698 1 = /dev/slm1 Second SLM laser printer
699 ...
700 28 block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
701 0 = /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0
702 1 = /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1
703 2 = /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2
704 3 = /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3
706 28 block ACSI disk (68k/Atari)
707 0 = /dev/ada First ACSI disk whole disk
708 16 = /dev/adb Second ACSI disk whole disk
709 32 = /dev/adc Third ACSI disk whole disk
710 ...
711 240 = /dev/adp 16th ACSI disk whole disk
713 Partitions are handled in the same way as for IDE
714 disks (see major number 3) except that the limit on
715 partitions is 15, like SCSI.
717 29 char Universal frame buffer
718 0 = /dev/fb0 First frame buffer
719 1 = /dev/fb1 Second frame buffer
720 ...
721 31 = /dev/fb31 32nd frame buffer
723 29 block Aztech/Orchid/Okano/Wearnes CD-ROM
724 0 = /dev/aztcd Aztech CD-ROM
726 30 char iBCS-2 compatibility devices
727 0 = /dev/socksys Socket access
728 1 = /dev/spx SVR3 local X interface
729 32 = /dev/inet/ip Network access
730 33 = /dev/inet/icmp
731 34 = /dev/inet/ggp
732 35 = /dev/inet/ipip
733 36 = /dev/inet/tcp
734 37 = /dev/inet/egp
735 38 = /dev/inet/pup
736 39 = /dev/inet/udp
737 40 = /dev/inet/idp
738 41 = /dev/inet/rawip
740 Additionally, iBCS-2 requires the following links:
742 /dev/ip -> /dev/inet/ip
743 /dev/icmp -> /dev/inet/icmp
744 /dev/ggp -> /dev/inet/ggp
745 /dev/ipip -> /dev/inet/ipip
746 /dev/tcp -> /dev/inet/tcp
747 /dev/egp -> /dev/inet/egp
748 /dev/pup -> /dev/inet/pup
749 /dev/udp -> /dev/inet/udp
750 /dev/idp -> /dev/inet/idp
751 /dev/rawip -> /dev/inet/rawip
752 /dev/inet/arp -> /dev/inet/udp
753 /dev/inet/rip -> /dev/inet/udp
754 /dev/nfsd -> /dev/socksys
755 /dev/X0R -> /dev/null (? apparently not required ?)
757 30 block Philips LMS CM-205 CD-ROM
758 0 = /dev/cm205cd Philips LMS CM-205 CD-ROM
760 /dev/lmscd is an older name for this device. This
761 driver does not work with the CM-205MS CD-ROM.
763 31 char MPU-401 MIDI
764 0 = /dev/mpu401data MPU-401 data port
765 1 = /dev/mpu401stat MPU-401 status port
767 31 block ROM/flash memory card
768 0 = /dev/rom0 First ROM card (rw)
769 ...
770 7 = /dev/rom7 Eighth ROM card (rw)
771 8 = /dev/rrom0 First ROM card (ro)
772 ...
773 15 = /dev/rrom7 Eighth ROM card (ro)
774 16 = /dev/flash0 First flash memory card (rw)
775 ...
776 23 = /dev/flash7 Eighth flash memory card (rw)
777 24 = /dev/rflash0 First flash memory card (ro)
778 ...
779 31 = /dev/rflash7 Eighth flash memory card (ro)
781 The read-write (rw) devices support back-caching
782 written data in RAM, as well as writing to flash RAM
783 devices. The read-only devices (ro) support reading
784 only.
786 32 char Specialix serial card
787 0 = /dev/ttyX0 First Specialix port
788 1 = /dev/ttyX1 Second Specialix port
789 ...
790 32 block Philips LMS CM-206 CD-ROM
791 0 = /dev/cm206cd Philips LMS CM-206 CD-ROM
793 33 char Specialix serial card - alternate devices
794 0 = /dev/cux0 Callout device for ttyX0
795 1 = /dev/cux1 Callout device for ttyX1
796 ...
797 33 block Third IDE hard disk/CD-ROM interface
798 0 = /dev/hde Master: whole disk (or CD-ROM)
799 64 = /dev/hdf Slave: whole disk (or CD-ROM)
801 Partitions are handled the same way as for the first
802 interface (see major number 3).
804 34 char Z8530 HDLC driver
805 0 = /dev/scc0 First Z8530, first port
806 1 = /dev/scc1 First Z8530, second port
807 2 = /dev/scc2 Second Z8530, first port
808 3 = /dev/scc3 Second Z8530, second port
809 ...
811 In a previous version these devices were named
812 /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
813 on.
815 34 block Fourth IDE hard disk/CD-ROM interface
816 0 = /dev/hdg Master: whole disk (or CD-ROM)
817 64 = /dev/hdh Slave: whole disk (or CD-ROM)
819 Partitions are handled the same way as for the first
820 interface (see major number 3).
822 35 char tclmidi MIDI driver
823 0 = /dev/midi0 First MIDI port, kernel timed
824 1 = /dev/midi1 Second MIDI port, kernel timed
825 2 = /dev/midi2 Third MIDI port, kernel timed
826 3 = /dev/midi3 Fourth MIDI port, kernel timed
827 64 = /dev/rmidi0 First MIDI port, untimed
828 65 = /dev/rmidi1 Second MIDI port, untimed
829 66 = /dev/rmidi2 Third MIDI port, untimed
830 67 = /dev/rmidi3 Fourth MIDI port, untimed
831 128 = /dev/smpte0 First MIDI port, SMPTE timed
832 129 = /dev/smpte1 Second MIDI port, SMPTE timed
833 130 = /dev/smpte2 Third MIDI port, SMPTE timed
834 131 = /dev/smpte3 Fourth MIDI port, SMPTE timed
836 35 block Slow memory ramdisk
837 0 = /dev/slram Slow memory ramdisk
839 36 char Netlink support
840 0 = /dev/route Routing, device updates, kernel to user
841 1 = /dev/skip enSKIP security cache control
842 3 = /dev/fwmonitor Firewall packet copies
843 16 = /dev/tap0 First Ethertap device
844 ...
845 31 = /dev/tap15 16th Ethertap device
847 36 block OBSOLETE (was MCA ESDI hard disk)
849 37 char IDE tape
850 0 = /dev/ht0 First IDE tape
851 1 = /dev/ht1 Second IDE tape
852 ...
853 128 = /dev/nht0 First IDE tape, no rewind-on-close
854 129 = /dev/nht1 Second IDE tape, no rewind-on-close
855 ...
857 Currently, only one IDE tape drive is supported.
859 37 block Zorro II ramdisk
860 0 = /dev/z2ram Zorro II ramdisk
862 38 char Myricom PCI Myrinet board
863 0 = /dev/mlanai0 First Myrinet board
864 1 = /dev/mlanai1 Second Myrinet board
865 ...
867 This device is used for status query, board control
868 and "user level packet I/O." This board is also
869 accessible as a standard networking "eth" device.
871 38 block OBSOLETE (was Linux/AP+)
873 39 char ML-16P experimental I/O board
874 0 = /dev/ml16pa-a0 First card, first analog channel
875 1 = /dev/ml16pa-a1 First card, second analog channel
876 ...
877 15 = /dev/ml16pa-a15 First card, 16th analog channel
878 16 = /dev/ml16pa-d First card, digital lines
879 17 = /dev/ml16pa-c0 First card, first counter/timer
880 18 = /dev/ml16pa-c1 First card, second counter/timer
881 19 = /dev/ml16pa-c2 First card, third counter/timer
882 32 = /dev/ml16pb-a0 Second card, first analog channel
883 33 = /dev/ml16pb-a1 Second card, second analog channel
884 ...
885 47 = /dev/ml16pb-a15 Second card, 16th analog channel
886 48 = /dev/ml16pb-d Second card, digital lines
887 49 = /dev/ml16pb-c0 Second card, first counter/timer
888 50 = /dev/ml16pb-c1 Second card, second counter/timer
889 51 = /dev/ml16pb-c2 Second card, third counter/timer
890 ...
891 39 block
893 40 char
895 40 block
897 41 char Yet Another Micro Monitor
898 0 = /dev/yamm Yet Another Micro Monitor
900 41 block
902 42 char Demo/sample use
904 42 block Demo/sample use
906 This number is intended for use in sample code, as
907 well as a general "example" device number. It
908 should never be used for a device driver that is being
909 distributed; either obtain an official number or use
910 the local/experimental range. The sudden addition or
911 removal of a driver with this number should not cause
912 ill effects to the system (bugs excepted.)
914 IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
915 DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
917 43 char isdn4linux virtual modem
918 0 = /dev/ttyI0 First virtual modem
919 ...
920 63 = /dev/ttyI63 64th virtual modem
922 43 block Network block devices
923 0 = /dev/nb0 First network block device
924 1 = /dev/nb1 Second network block device
925 ...
927 Network Block Device is somehow similar to loopback
928 devices: If you read from it, it sends packet across
929 network asking server for data. If you write to it, it
930 sends packet telling server to write. It could be used
931 to mounting filesystems over the net, swapping over
932 the net, implementing block device in userland etc.
934 44 char isdn4linux virtual modem - alternate devices
935 0 = /dev/cui0 Callout device for ttyI0
936 ...
937 63 = /dev/cui63 Callout device for ttyI63
939 44 block Flash Translation Layer (FTL) filesystems
940 0 = /dev/ftla FTL on first Memory Technology Device
941 16 = /dev/ftlb FTL on second Memory Technology Device
942 32 = /dev/ftlc FTL on third Memory Technology Device
943 ...
944 240 = /dev/ftlp FTL on 16th Memory Technology Device
946 Partitions are handled in the same way as for IDE
947 disks (see major number 3) except that the partition
948 limit is 15 rather than 63 per disk (same as SCSI.)
950 45 char isdn4linux ISDN BRI driver
951 0 = /dev/isdn0 First virtual B channel raw data
952 ...
953 63 = /dev/isdn63 64th virtual B channel raw data
954 64 = /dev/isdnctrl0 First channel control/debug
955 ...
956 127 = /dev/isdnctrl63 64th channel control/debug
958 128 = /dev/ippp0 First SyncPPP device
959 ...
960 191 = /dev/ippp63 64th SyncPPP device
962 255 = /dev/isdninfo ISDN monitor interface
964 45 block Parallel port IDE disk devices
965 0 = /dev/pda First parallel port IDE disk
966 16 = /dev/pdb Second parallel port IDE disk
967 32 = /dev/pdc Third parallel port IDE disk
968 48 = /dev/pdd Fourth parallel port IDE disk
970 Partitions are handled in the same way as for IDE
971 disks (see major number 3) except that the partition
972 limit is 15 rather than 63 per disk.
974 46 char Comtrol Rocketport serial card
975 0 = /dev/ttyR0 First Rocketport port
976 1 = /dev/ttyR1 Second Rocketport port
977 ...
978 46 block Parallel port ATAPI CD-ROM devices
979 0 = /dev/pcd0 First parallel port ATAPI CD-ROM
980 1 = /dev/pcd1 Second parallel port ATAPI CD-ROM
981 2 = /dev/pcd2 Third parallel port ATAPI CD-ROM
982 3 = /dev/pcd3 Fourth parallel port ATAPI CD-ROM
984 47 char Comtrol Rocketport serial card - alternate devices
985 0 = /dev/cur0 Callout device for ttyR0
986 1 = /dev/cur1 Callout device for ttyR1
987 ...
988 47 block Parallel port ATAPI disk devices
989 0 = /dev/pf0 First parallel port ATAPI disk
990 1 = /dev/pf1 Second parallel port ATAPI disk
991 2 = /dev/pf2 Third parallel port ATAPI disk
992 3 = /dev/pf3 Fourth parallel port ATAPI disk
994 This driver is intended for floppy disks and similar
995 devices and hence does not support partitioning.
997 48 char SDL RISCom serial card
998 0 = /dev/ttyL0 First RISCom port
999 1 = /dev/ttyL1 Second RISCom port
1000 ...
1001 48 block Mylex DAC960 PCI RAID controller; first controller
1002 0 = /dev/rd/c0d0 First disk, whole disk
1003 8 = /dev/rd/c0d1 Second disk, whole disk
1004 ...
1005 248 = /dev/rd/c0d31 32nd disk, whole disk
1007 For partitions add:
1008 0 = /dev/rd/c?d? Whole disk
1009 1 = /dev/rd/c?d?p1 First partition
1010 ...
1011 7 = /dev/rd/c?d?p7 Seventh partition
1013 49 char SDL RISCom serial card - alternate devices
1014 0 = /dev/cul0 Callout device for ttyL0
1015 1 = /dev/cul1 Callout device for ttyL1
1016 ...
1017 49 block Mylex DAC960 PCI RAID controller; second controller
1018 0 = /dev/rd/c1d0 First disk, whole disk
1019 8 = /dev/rd/c1d1 Second disk, whole disk
1020 ...
1021 248 = /dev/rd/c1d31 32nd disk, whole disk
1023 Partitions are handled as for major 48.
1025 50 char Reserved for GLINT
1027 50 block Mylex DAC960 PCI RAID controller; third controller
1028 0 = /dev/rd/c2d0 First disk, whole disk
1029 8 = /dev/rd/c2d1 Second disk, whole disk
1030 ...
1031 248 = /dev/rd/c2d31 32nd disk, whole disk
1033 51 char Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
1034 0 = /dev/bc0 First Baycom radio modem
1035 1 = /dev/bc1 Second Baycom radio modem
1036 ...
1037 51 block Mylex DAC960 PCI RAID controller; fourth controller
1038 0 = /dev/rd/c3d0 First disk, whole disk
1039 8 = /dev/rd/c3d1 Second disk, whole disk
1040 ...
1041 248 = /dev/rd/c3d31 32nd disk, whole disk
1043 Partitions are handled as for major 48.
1045 52 char Spellcaster DataComm/BRI ISDN card
1046 0 = /dev/dcbri0 First DataComm card
1047 1 = /dev/dcbri1 Second DataComm card
1048 2 = /dev/dcbri2 Third DataComm card
1049 3 = /dev/dcbri3 Fourth DataComm card
1051 52 block Mylex DAC960 PCI RAID controller; fifth controller
1052 0 = /dev/rd/c4d0 First disk, whole disk
1053 8 = /dev/rd/c4d1 Second disk, whole disk
1054 ...
1055 248 = /dev/rd/c4d31 32nd disk, whole disk
1057 Partitions are handled as for major 48.
1059 53 char BDM interface for remote debugging MC683xx microcontrollers
1060 0 = /dev/pd_bdm0 PD BDM interface on lp0
1061 1 = /dev/pd_bdm1 PD BDM interface on lp1
1062 2 = /dev/pd_bdm2 PD BDM interface on lp2
1063 4 = /dev/icd_bdm0 ICD BDM interface on lp0
1064 5 = /dev/icd_bdm1 ICD BDM interface on lp1
1065 6 = /dev/icd_bdm2 ICD BDM interface on lp2
1067 This device is used for the interfacing to the MC683xx
1068 microcontrollers via Background Debug Mode by use of a
1069 Parallel Port interface. PD is the Motorola Public
1070 Domain Interface and ICD is the commercial interface
1071 by P&E.
1073 53 block Mylex DAC960 PCI RAID controller; sixth controller
1074 0 = /dev/rd/c5d0 First disk, whole disk
1075 8 = /dev/rd/c5d1 Second disk, whole disk
1076 ...
1077 248 = /dev/rd/c5d31 32nd disk, whole disk
1079 Partitions are handled as for major 48.
1081 54 char Electrocardiognosis Holter serial card
1082 0 = /dev/holter0 First Holter port
1083 1 = /dev/holter1 Second Holter port
1084 2 = /dev/holter2 Third Holter port
1086 A custom serial card used by Electrocardiognosis SRL
1087 <mseritan@ottonel.pub.ro> to transfer data from Holter
1088 24-hour heart monitoring equipment.
1090 54 block Mylex DAC960 PCI RAID controller; seventh controller
1091 0 = /dev/rd/c6d0 First disk, whole disk
1092 8 = /dev/rd/c6d1 Second disk, whole disk
1093 ...
1094 248 = /dev/rd/c6d31 32nd disk, whole disk
1096 Partitions are handled as for major 48.
1098 55 char DSP56001 digital signal processor
1099 0 = /dev/dsp56k First DSP56001
1101 55 block Mylex DAC960 PCI RAID controller; eighth controller
1102 0 = /dev/rd/c7d0 First disk, whole disk
1103 8 = /dev/rd/c7d1 Second disk, whole disk
1104 ...
1105 248 = /dev/rd/c7d31 32nd disk, whole disk
1107 Partitions are handled as for major 48.
1109 56 char Apple Desktop Bus
1110 0 = /dev/adb ADB bus control
1112 Additional devices will be added to this number, all
1113 starting with /dev/adb.
1115 56 block Fifth IDE hard disk/CD-ROM interface
1116 0 = /dev/hdi Master: whole disk (or CD-ROM)
1117 64 = /dev/hdj Slave: whole disk (or CD-ROM)
1119 Partitions are handled the same way as for the first
1120 interface (see major number 3).
1122 57 char Hayes ESP serial card
1123 0 = /dev/ttyP0 First ESP port
1124 1 = /dev/ttyP1 Second ESP port
1125 ...
1127 57 block Sixth IDE hard disk/CD-ROM interface
1128 0 = /dev/hdk Master: whole disk (or CD-ROM)
1129 64 = /dev/hdl Slave: whole disk (or CD-ROM)
1131 Partitions are handled the same way as for the first
1132 interface (see major number 3).
1134 58 char Hayes ESP serial card - alternate devices
1135 0 = /dev/cup0 Callout device for ttyP0
1136 1 = /dev/cup1 Callout device for ttyP1
1137 ...
1139 58 block Reserved for logical volume manager
1141 59 char sf firewall package
1142 0 = /dev/firewall Communication with sf kernel module
1144 59 block Generic PDA filesystem device
1145 0 = /dev/pda0 First PDA device
1146 1 = /dev/pda1 Second PDA device
1147 ...
1149 The pda devices are used to mount filesystems on
1150 remote pda's (basically slow handheld machines with
1151 proprietary OS's and limited memory and storage
1152 running small fs translation drivers) through serial /
1153 IRDA / parallel links.
1155 NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1157 60-63 char LOCAL/EXPERIMENTAL USE
1159 60-63 block LOCAL/EXPERIMENTAL USE
1160 Allocated for local/experimental use. For devices not
1161 assigned official numbers, these ranges should be
1162 used in order to avoid conflicting with future assignments.
1164 64 char ENskip kernel encryption package
1165 0 = /dev/enskip Communication with ENskip kernel module
1167 64 block Scramdisk/DriveCrypt encrypted devices
1168 0 = /dev/scramdisk/master Master node for ioctls
1169 1 = /dev/scramdisk/1 First encrypted device
1170 2 = /dev/scramdisk/2 Second encrypted device
1171 ...
1172 255 = /dev/scramdisk/255 255th encrypted device
1174 The filename of the encrypted container and the passwords
1175 are sent via ioctls (using the sdmount tool) to the master
1176 node which then activates them via one of the
1177 /dev/scramdisk/x nodes for loop mounting (all handled
1178 through the sdmount tool).
1180 Requested by: andy@scramdisklinux.org
1182 65 char Sundance "plink" Transputer boards (obsolete, unused)
1183 0 = /dev/plink0 First plink device
1184 1 = /dev/plink1 Second plink device
1185 2 = /dev/plink2 Third plink device
1186 3 = /dev/plink3 Fourth plink device
1187 64 = /dev/rplink0 First plink device, raw
1188 65 = /dev/rplink1 Second plink device, raw
1189 66 = /dev/rplink2 Third plink device, raw
1190 67 = /dev/rplink3 Fourth plink device, raw
1191 128 = /dev/plink0d First plink device, debug
1192 129 = /dev/plink1d Second plink device, debug
1193 130 = /dev/plink2d Third plink device, debug
1194 131 = /dev/plink3d Fourth plink device, debug
1195 192 = /dev/rplink0d First plink device, raw, debug
1196 193 = /dev/rplink1d Second plink device, raw, debug
1197 194 = /dev/rplink2d Third plink device, raw, debug
1198 195 = /dev/rplink3d Fourth plink device, raw, debug
1200 This is a commercial driver; contact James Howes
1201 <jth@prosig.demon.co.uk> for information.
1203 65 block SCSI disk devices (16-31)
1204 0 = /dev/sdq 17th SCSI disk whole disk
1205 16 = /dev/sdr 18th SCSI disk whole disk
1206 32 = /dev/sds 19th SCSI disk whole disk
1207 ...
1208 240 = /dev/sdaf 32nd SCSI disk whole disk
1210 Partitions are handled in the same way as for IDE
1211 disks (see major number 3) except that the limit on
1212 partitions is 15.
1214 66 char YARC PowerPC PCI coprocessor card
1215 0 = /dev/yppcpci0 First YARC card
1216 1 = /dev/yppcpci1 Second YARC card
1217 ...
1219 66 block SCSI disk devices (32-47)
1220 0 = /dev/sdag 33th SCSI disk whole disk
1221 16 = /dev/sdah 34th SCSI disk whole disk
1222 32 = /dev/sdai 35th SCSI disk whole disk
1223 ...
1224 240 = /dev/sdav 48nd SCSI disk whole disk
1226 Partitions are handled in the same way as for IDE
1227 disks (see major number 3) except that the limit on
1228 partitions is 15.
1230 67 char Coda network file system
1231 0 = /dev/cfs0 Coda cache manager
1233 See http://www.coda.cs.cmu.edu for information about Coda.
1235 67 block SCSI disk devices (48-63)
1236 0 = /dev/sdaw 49th SCSI disk whole disk
1237 16 = /dev/sdax 50th SCSI disk whole disk
1238 32 = /dev/sday 51st SCSI disk whole disk
1239 ...
1240 240 = /dev/sdbl 64th SCSI disk whole disk
1242 Partitions are handled in the same way as for IDE
1243 disks (see major number 3) except that the limit on
1244 partitions is 15.
1246 68 char CAPI 2.0 interface
1247 0 = /dev/capi20 Control device
1248 1 = /dev/capi20.00 First CAPI 2.0 application
1249 2 = /dev/capi20.01 Second CAPI 2.0 application
1250 ...
1251 20 = /dev/capi20.19 19th CAPI 2.0 application
1253 ISDN CAPI 2.0 driver for use with CAPI 2.0
1254 applications; currently supports the AVM B1 card.
1256 68 block SCSI disk devices (64-79)
1257 0 = /dev/sdbm 65th SCSI disk whole disk
1258 16 = /dev/sdbn 66th SCSI disk whole disk
1259 32 = /dev/sdbo 67th SCSI disk whole disk
1260 ...
1261 240 = /dev/sdcb 80th SCSI disk whole disk
1263 Partitions are handled in the same way as for IDE
1264 disks (see major number 3) except that the limit on
1265 partitions is 15.
1267 69 char MA16 numeric accelerator card
1268 0 = /dev/ma16 Board memory access
1270 69 block SCSI disk devices (80-95)
1271 0 = /dev/sdcc 81st SCSI disk whole disk
1272 16 = /dev/sdcd 82nd SCSI disk whole disk
1273 32 = /dev/sdce 83th SCSI disk whole disk
1274 ...
1275 240 = /dev/sdcr 96th SCSI disk whole disk
1277 Partitions are handled in the same way as for IDE
1278 disks (see major number 3) except that the limit on
1279 partitions is 15.
1281 70 char SpellCaster Protocol Services Interface
1282 0 = /dev/apscfg Configuration interface
1283 1 = /dev/apsauth Authentication interface
1284 2 = /dev/apslog Logging interface
1285 3 = /dev/apsdbg Debugging interface
1286 64 = /dev/apsisdn ISDN command interface
1287 65 = /dev/apsasync Async command interface
1288 128 = /dev/apsmon Monitor interface
1290 70 block SCSI disk devices (96-111)
1291 0 = /dev/sdcs 97th SCSI disk whole disk
1292 16 = /dev/sdct 98th SCSI disk whole disk
1293 32 = /dev/sdcu 99th SCSI disk whole disk
1294 ...
1295 240 = /dev/sddh 112nd SCSI disk whole disk
1297 Partitions are handled in the same way as for IDE
1298 disks (see major number 3) except that the limit on
1299 partitions is 15.
1301 71 char Computone IntelliPort II serial card
1302 0 = /dev/ttyF0 IntelliPort II board 0, port 0
1303 1 = /dev/ttyF1 IntelliPort II board 0, port 1
1304 ...
1305 63 = /dev/ttyF63 IntelliPort II board 0, port 63
1306 64 = /dev/ttyF64 IntelliPort II board 1, port 0
1307 65 = /dev/ttyF65 IntelliPort II board 1, port 1
1308 ...
1309 127 = /dev/ttyF127 IntelliPort II board 1, port 63
1310 128 = /dev/ttyF128 IntelliPort II board 2, port 0
1311 129 = /dev/ttyF129 IntelliPort II board 2, port 1
1312 ...
1313 191 = /dev/ttyF191 IntelliPort II board 2, port 63
1314 192 = /dev/ttyF192 IntelliPort II board 3, port 0
1315 193 = /dev/ttyF193 IntelliPort II board 3, port 1
1316 ...
1317 255 = /dev/ttyF255 IntelliPort II board 3, port 63
1319 71 block SCSI disk devices (112-127)
1320 0 = /dev/sddi 113th SCSI disk whole disk
1321 16 = /dev/sddj 114th SCSI disk whole disk
1322 32 = /dev/sddk 115th SCSI disk whole disk
1323 ...
1324 240 = /dev/sddx 128th SCSI disk whole disk
1326 Partitions are handled in the same way as for IDE
1327 disks (see major number 3) except that the limit on
1328 partitions is 15.
1330 72 char Computone IntelliPort II serial card - alternate devices
1331 0 = /dev/cuf0 Callout device for ttyF0
1332 1 = /dev/cuf1 Callout device for ttyF1
1333 ...
1334 63 = /dev/cuf63 Callout device for ttyF63
1335 64 = /dev/cuf64 Callout device for ttyF64
1336 65 = /dev/cuf65 Callout device for ttyF65
1337 ...
1338 127 = /dev/cuf127 Callout device for ttyF127
1339 128 = /dev/cuf128 Callout device for ttyF128
1340 129 = /dev/cuf129 Callout device for ttyF129
1341 ...
1342 191 = /dev/cuf191 Callout device for ttyF191
1343 192 = /dev/cuf192 Callout device for ttyF192
1344 193 = /dev/cuf193 Callout device for ttyF193
1345 ...
1346 255 = /dev/cuf255 Callout device for ttyF255
1348 72 block Compaq Intelligent Drive Array, first controller
1349 0 = /dev/ida/c0d0 First logical drive whole disk
1350 16 = /dev/ida/c0d1 Second logical drive whole disk
1351 ...
1352 240 = /dev/ida/c0d15 16th logical drive whole disk
1354 Partitions are handled the same way as for Mylex
1355 DAC960 (see major number 48) except that the limit on
1356 partitions is 15.
1358 73 char Computone IntelliPort II serial card - control devices
1359 0 = /dev/ip2ipl0 Loadware device for board 0
1360 1 = /dev/ip2stat0 Status device for board 0
1361 4 = /dev/ip2ipl1 Loadware device for board 1
1362 5 = /dev/ip2stat1 Status device for board 1
1363 8 = /dev/ip2ipl2 Loadware device for board 2
1364 9 = /dev/ip2stat2 Status device for board 2
1365 12 = /dev/ip2ipl3 Loadware device for board 3
1366 13 = /dev/ip2stat3 Status device for board 3
1368 73 block Compaq Intelligent Drive Array, second controller
1369 0 = /dev/ida/c1d0 First logical drive whole disk
1370 16 = /dev/ida/c1d1 Second logical drive whole disk
1371 ...
1372 240 = /dev/ida/c1d15 16th logical drive whole disk
1374 Partitions are handled the same way as for Mylex
1375 DAC960 (see major number 48) except that the limit on
1376 partitions is 15.
1378 74 char SCI bridge
1379 0 = /dev/SCI/0 SCI device 0
1380 1 = /dev/SCI/1 SCI device 1
1381 ...
1383 Currently for Dolphin Interconnect Solutions' PCI-SCI
1384 bridge.
1386 74 block Compaq Intelligent Drive Array, third controller
1387 0 = /dev/ida/c2d0 First logical drive whole disk
1388 16 = /dev/ida/c2d1 Second logical drive whole disk
1389 ...
1390 240 = /dev/ida/c2d15 16th logical drive whole disk
1392 Partitions are handled the same way as for Mylex
1393 DAC960 (see major number 48) except that the limit on
1394 partitions is 15.
1396 75 char Specialix IO8+ serial card
1397 0 = /dev/ttyW0 First IO8+ port, first card
1398 1 = /dev/ttyW1 Second IO8+ port, first card
1399 ...
1400 8 = /dev/ttyW8 First IO8+ port, second card
1401 ...
1403 75 block Compaq Intelligent Drive Array, fourth controller
1404 0 = /dev/ida/c3d0 First logical drive whole disk
1405 16 = /dev/ida/c3d1 Second logical drive whole disk
1406 ...
1407 240 = /dev/ida/c3d15 16th logical drive whole disk
1409 Partitions are handled the same way as for Mylex
1410 DAC960 (see major number 48) except that the limit on
1411 partitions is 15.
1413 76 char Specialix IO8+ serial card - alternate devices
1414 0 = /dev/cuw0 Callout device for ttyW0
1415 1 = /dev/cuw1 Callout device for ttyW1
1416 ...
1417 8 = /dev/cuw8 Callout device for ttyW8
1418 ...
1420 76 block Compaq Intelligent Drive Array, fifth controller
1421 0 = /dev/ida/c4d0 First logical drive whole disk
1422 16 = /dev/ida/c4d1 Second logical drive whole disk
1423 ...
1424 240 = /dev/ida/c4d15 16th logical drive whole disk
1426 Partitions are handled the same way as for Mylex
1427 DAC960 (see major number 48) except that the limit on
1428 partitions is 15.
1431 77 char ComScire Quantum Noise Generator
1432 0 = /dev/qng ComScire Quantum Noise Generator
1434 77 block Compaq Intelligent Drive Array, sixth controller
1435 0 = /dev/ida/c5d0 First logical drive whole disk
1436 16 = /dev/ida/c5d1 Second logical drive whole disk
1437 ...
1438 240 = /dev/ida/c5d15 16th logical drive whole disk
1440 Partitions are handled the same way as for Mylex
1441 DAC960 (see major number 48) except that the limit on
1442 partitions is 15.
1444 78 char PAM Software's multimodem boards
1445 0 = /dev/ttyM0 First PAM modem
1446 1 = /dev/ttyM1 Second PAM modem
1447 ...
1449 78 block Compaq Intelligent Drive Array, seventh controller
1450 0 = /dev/ida/c6d0 First logical drive whole disk
1451 16 = /dev/ida/c6d1 Second logical drive whole disk
1452 ...
1453 240 = /dev/ida/c6d15 16th logical drive whole disk
1455 Partitions are handled the same way as for Mylex
1456 DAC960 (see major number 48) except that the limit on
1457 partitions is 15.
1459 79 char PAM Software's multimodem boards - alternate devices
1460 0 = /dev/cum0 Callout device for ttyM0
1461 1 = /dev/cum1 Callout device for ttyM1
1462 ...
1464 79 block Compaq Intelligent Drive Array, eighth controller
1465 0 = /dev/ida/c7d0 First logical drive whole disk
1466 16 = /dev/ida/c7d1 Second logical drive whole disk
1467 ...
1468 240 = /dev/ida/c715 16th logical drive whole disk
1470 Partitions are handled the same way as for Mylex
1471 DAC960 (see major number 48) except that the limit on
1472 partitions is 15.
1474 80 char Photometrics AT200 CCD camera
1475 0 = /dev/at200 Photometrics AT200 CCD camera
1477 80 block I2O hard disk
1478 0 = /dev/i2o/hda First I2O hard disk, whole disk
1479 16 = /dev/i2o/hdb Second I2O hard disk, whole disk
1480 ...
1481 240 = /dev/i2o/hdp 16th I2O hard disk, whole disk
1483 Partitions are handled in the same way as for IDE
1484 disks (see major number 3) except that the limit on
1485 partitions is 15.
1487 81 char video4linux
1488 0 = /dev/video0 Video capture/overlay device
1489 ...
1490 63 = /dev/video63 Video capture/overlay device
1491 64 = /dev/radio0 Radio device
1492 ...
1493 127 = /dev/radio63 Radio device
1494 224 = /dev/vbi0 Vertical blank interrupt
1495 ...
1496 255 = /dev/vbi31 Vertical blank interrupt
1498 81 block I2O hard disk
1499 0 = /dev/i2o/hdq 17th I2O hard disk, whole disk
1500 16 = /dev/i2o/hdr 18th I2O hard disk, whole disk
1501 ...
1502 240 = /dev/i2o/hdaf 32nd I2O hard disk, whole disk
1504 Partitions are handled in the same way as for IDE
1505 disks (see major number 3) except that the limit on
1506 partitions is 15.
1508 82 char WiNRADiO communications receiver card
1509 0 = /dev/winradio0 First WiNRADiO card
1510 1 = /dev/winradio1 Second WiNRADiO card
1511 ...
1513 The driver and documentation may be obtained from
1514 http://www.winradio.com/
1516 82 block I2O hard disk
1517 0 = /dev/i2o/hdag 33rd I2O hard disk, whole disk
1518 16 = /dev/i2o/hdah 34th I2O hard disk, whole disk
1519 ...
1520 240 = /dev/i2o/hdav 48th I2O hard disk, whole disk
1522 Partitions are handled in the same way as for IDE
1523 disks (see major number 3) except that the limit on
1524 partitions is 15.
1526 83 char Matrox mga_vid video driver
1527 0 = /dev/mga_vid0 1st video card
1528 1 = /dev/mga_vid1 2nd video card
1529 2 = /dev/mga_vid2 3rd video card
1530 ...
1531 15 = /dev/mga_vid15 16th video card
1533 83 block I2O hard disk
1534 0 = /dev/i2o/hdaw 49th I2O hard disk, whole disk
1535 16 = /dev/i2o/hdax 50th I2O hard disk, whole disk
1536 ...
1537 240 = /dev/i2o/hdbl 64th I2O hard disk, whole disk
1539 Partitions are handled in the same way as for IDE
1540 disks (see major number 3) except that the limit on
1541 partitions is 15.
1543 84 char Ikon 1011[57] Versatec Greensheet Interface
1544 0 = /dev/ihcp0 First Greensheet port
1545 1 = /dev/ihcp1 Second Greensheet port
1547 84 block I2O hard disk
1548 0 = /dev/i2o/hdbm 65th I2O hard disk, whole disk
1549 16 = /dev/i2o/hdbn 66th I2O hard disk, whole disk
1550 ...
1551 240 = /dev/i2o/hdcb 80th I2O hard disk, whole disk
1553 Partitions are handled in the same way as for IDE
1554 disks (see major number 3) except that the limit on
1555 partitions is 15.
1557 85 char Linux/SGI shared memory input queue
1558 0 = /dev/shmiq Master shared input queue
1559 1 = /dev/qcntl0 First device pushed
1560 2 = /dev/qcntl1 Second device pushed
1561 ...
1563 85 block I2O hard disk
1564 0 = /dev/i2o/hdcc 81st I2O hard disk, whole disk
1565 16 = /dev/i2o/hdcd 82nd I2O hard disk, whole disk
1566 ...
1567 240 = /dev/i2o/hdcr 96th I2O hard disk, whole disk
1569 Partitions are handled in the same way as for IDE
1570 disks (see major number 3) except that the limit on
1571 partitions is 15.
1573 86 char SCSI media changer
1574 0 = /dev/sch0 First SCSI media changer
1575 1 = /dev/sch1 Second SCSI media changer
1576 ...
1578 86 block I2O hard disk
1579 0 = /dev/i2o/hdcs 97th I2O hard disk, whole disk
1580 16 = /dev/i2o/hdct 98th I2O hard disk, whole disk
1581 ...
1582 240 = /dev/i2o/hddh 112th I2O hard disk, whole disk
1584 Partitions are handled in the same way as for IDE
1585 disks (see major number 3) except that the limit on
1586 partitions is 15.
1588 87 char Sony Control-A1 stereo control bus
1589 0 = /dev/controla0 First device on chain
1590 1 = /dev/controla1 Second device on chain
1591 ...
1593 87 block I2O hard disk
1594 0 = /dev/i2o/hddi 113rd I2O hard disk, whole disk
1595 16 = /dev/i2o/hddj 114th I2O hard disk, whole disk
1596 ...
1597 240 = /dev/i2o/hddx 128th I2O hard disk, whole disk
1599 Partitions are handled in the same way as for IDE
1600 disks (see major number 3) except that the limit on
1601 partitions is 15.
1603 88 char COMX synchronous serial card
1604 0 = /dev/comx0 COMX channel 0
1605 1 = /dev/comx1 COMX channel 1
1606 ...
1608 88 block Seventh IDE hard disk/CD-ROM interface
1609 0 = /dev/hdm Master: whole disk (or CD-ROM)
1610 64 = /dev/hdn Slave: whole disk (or CD-ROM)
1612 Partitions are handled the same way as for the first
1613 interface (see major number 3).
1615 89 char I2C bus interface
1616 0 = /dev/i2c-0 First I2C adapter
1617 1 = /dev/i2c-1 Second I2C adapter
1618 ...
1620 89 block Eighth IDE hard disk/CD-ROM interface
1621 0 = /dev/hdo Master: whole disk (or CD-ROM)
1622 64 = /dev/hdp Slave: whole disk (or CD-ROM)
1624 Partitions are handled the same way as for the first
1625 interface (see major number 3).
1627 90 char Memory Technology Device (RAM, ROM, Flash)
1628 0 = /dev/mtd0 First MTD (rw)
1629 1 = /dev/mtdr0 First MTD (ro)
1630 ...
1631 30 = /dev/mtd15 16th MTD (rw)
1632 31 = /dev/mtdr15 16th MTD (ro)
1634 90 block Ninth IDE hard disk/CD-ROM interface
1635 0 = /dev/hdq Master: whole disk (or CD-ROM)
1636 64 = /dev/hdr Slave: whole disk (or CD-ROM)
1638 Partitions are handled the same way as for the first
1639 interface (see major number 3).
1641 91 char CAN-Bus devices
1642 0 = /dev/can0 First CAN-Bus controller
1643 1 = /dev/can1 Second CAN-Bus controller
1644 ...
1646 91 block Tenth IDE hard disk/CD-ROM interface
1647 0 = /dev/hds Master: whole disk (or CD-ROM)
1648 64 = /dev/hdt Slave: whole disk (or CD-ROM)
1650 Partitions are handled the same way as for the first
1651 interface (see major number 3).
1653 92 char Reserved for ith Kommunikationstechnik MIC ISDN card
1655 92 block PPDD encrypted disk driver
1656 0 = /dev/ppdd0 First encrypted disk
1657 1 = /dev/ppdd1 Second encrypted disk
1658 ...
1660 Partitions are handled in the same way as for IDE
1661 disks (see major number 3) except that the limit on
1662 partitions is 15.
1664 93 char
1666 93 block NAND Flash Translation Layer filesystem
1667 0 = /dev/nftla First NFTL layer
1668 16 = /dev/nftlb Second NFTL layer
1669 ...
1670 240 = /dev/nftlp 16th NTFL layer
1672 94 char
1674 94 block IBM S/390 DASD block storage
1675 0 = /dev/dasda First DASD device, major
1676 1 = /dev/dasda1 First DASD device, block 1
1677 2 = /dev/dasda2 First DASD device, block 2
1678 3 = /dev/dasda3 First DASD device, block 3
1679 4 = /dev/dasdb Second DASD device, major
1680 5 = /dev/dasdb1 Second DASD device, block 1
1681 6 = /dev/dasdb2 Second DASD device, block 2
1682 7 = /dev/dasdb3 Second DASD device, block 3
1683 ...
1685 95 char IP filter
1686 0 = /dev/ipl Filter control device/log file
1687 1 = /dev/ipnat NAT control device/log file
1688 2 = /dev/ipstate State information log file
1689 3 = /dev/ipauth Authentication control device/log file
1690 ...
1692 96 char Parallel port ATAPI tape devices
1693 0 = /dev/pt0 First parallel port ATAPI tape
1694 1 = /dev/pt1 Second parallel port ATAPI tape
1695 ...
1696 128 = /dev/npt0 First p.p. ATAPI tape, no rewind
1697 129 = /dev/npt1 Second p.p. ATAPI tape, no rewind
1698 ...
1700 96 block Inverse NAND Flash Translation Layer
1701 0 = /dev/inftla First INFTL layer
1702 16 = /dev/inftlb Second INFTL layer
1703 ...
1704 240 = /dev/inftlp 16th INTFL layer
1706 97 char Parallel port generic ATAPI interface
1707 0 = /dev/pg0 First parallel port ATAPI device
1708 1 = /dev/pg1 Second parallel port ATAPI device
1709 2 = /dev/pg2 Third parallel port ATAPI device
1710 3 = /dev/pg3 Fourth parallel port ATAPI device
1712 These devices support the same API as the generic SCSI
1713 devices.
1715 98 char Control and Measurement Device (comedi)
1716 0 = /dev/comedi0 First comedi device
1717 1 = /dev/comedi1 Second comedi device
1718 ...
1720 See http://stm.lbl.gov/comedi.
1722 98 block User-mode virtual block device
1723 0 = /dev/ubda First user-mode block device
1724 16 = /dev/udbb Second user-mode block device
1725 ...
1727 Partitions are handled in the same way as for IDE
1728 disks (see major number 3) except that the limit on
1729 partitions is 15.
1731 This device is used by the user-mode virtual kernel port.
1733 99 char Raw parallel ports
1734 0 = /dev/parport0 First parallel port
1735 1 = /dev/parport1 Second parallel port
1736 ...
1738 99 block JavaStation flash disk
1739 0 = /dev/jsfd JavaStation flash disk
1741 100 char Telephony for Linux
1742 0 = /dev/phone0 First telephony device
1743 1 = /dev/phone1 Second telephony device
1744 ...
1746 101 char Motorola DSP 56xxx board
1747 0 = /dev/mdspstat Status information
1748 1 = /dev/mdsp1 First DSP board I/O controls
1749 ...
1750 16 = /dev/mdsp16 16th DSP board I/O controls
1752 101 block AMI HyperDisk RAID controller
1753 0 = /dev/amiraid/ar0 First array whole disk
1754 16 = /dev/amiraid/ar1 Second array whole disk
1755 ...
1756 240 = /dev/amiraid/ar15 16th array whole disk
1758 For each device, partitions are added as:
1759 0 = /dev/amiraid/ar? Whole disk
1760 1 = /dev/amiraid/ar?p1 First partition
1761 2 = /dev/amiraid/ar?p2 Second partition
1762 ...
1763 15 = /dev/amiraid/ar?p15 15th partition
1765 102 char
1767 102 block Compressed block device
1768 0 = /dev/cbd/a First compressed block device, whole device
1769 16 = /dev/cbd/b Second compressed block device, whole device
1770 ...
1771 240 = /dev/cbd/p 16th compressed block device, whole device
1773 Partitions are handled in the same way as for IDE
1774 disks (see major number 3) except that the limit on
1775 partitions is 15.
1777 103 char Arla network file system
1778 0 = /dev/nnpfs0 First NNPFS device
1779 1 = /dev/nnpfs1 Second NNPFS device
1781 Arla is a free clone of the Andrew File System, AFS.
1782 The NNPFS device gives user mode filesystem
1783 implementations a kernel presence for caching and easy
1784 mounting. For more information about the project,
1785 write to <arla-drinkers@stacken.kth.se> or see
1786 http://www.stacken.kth.se/project/arla/
1788 103 block Audit device
1789 0 = /dev/audit Audit device
1791 104 char Flash BIOS support
1793 104 block Compaq Next Generation Drive Array, first controller
1794 0 = /dev/cciss/c0d0 First logical drive, whole disk
1795 16 = /dev/cciss/c0d1 Second logical drive, whole disk
1796 ...
1797 240 = /dev/cciss/c0d15 16th logical drive, whole disk
1799 Partitions are handled the same way as for Mylex
1800 DAC960 (see major number 48) except that the limit on
1801 partitions is 15.
1803 105 char Comtrol VS-1000 serial controller
1804 0 = /dev/ttyV0 First VS-1000 port
1805 1 = /dev/ttyV1 Second VS-1000 port
1806 ...
1808 105 block Compaq Next Generation Drive Array, second controller
1809 0 = /dev/cciss/c1d0 First logical drive, whole disk
1810 16 = /dev/cciss/c1d1 Second logical drive, whole disk
1811 ...
1812 240 = /dev/cciss/c1d15 16th logical drive, whole disk
1814 Partitions are handled the same way as for Mylex
1815 DAC960 (see major number 48) except that the limit on
1816 partitions is 15.
1818 106 char Comtrol VS-1000 serial controller - alternate devices
1819 0 = /dev/cuv0 First VS-1000 port
1820 1 = /dev/cuv1 Second VS-1000 port
1821 ...
1823 106 block Compaq Next Generation Drive Array, third controller
1824 0 = /dev/cciss/c2d0 First logical drive, whole disk
1825 16 = /dev/cciss/c2d1 Second logical drive, whole disk
1826 ...
1827 240 = /dev/cciss/c2d15 16th logical drive, whole disk
1829 Partitions are handled the same way as for Mylex
1830 DAC960 (see major number 48) except that the limit on
1831 partitions is 15.
1833 107 char 3Dfx Voodoo Graphics device
1834 0 = /dev/3dfx Primary 3Dfx graphics device
1836 107 block Compaq Next Generation Drive Array, fourth controller
1837 0 = /dev/cciss/c3d0 First logical drive, whole disk
1838 16 = /dev/cciss/c3d1 Second logical drive, whole disk
1839 ...
1840 240 = /dev/cciss/c3d15 16th logical drive, whole disk
1842 Partitions are handled the same way as for Mylex
1843 DAC960 (see major number 48) except that the limit on
1844 partitions is 15.
1846 108 char Device independent PPP interface
1847 0 = /dev/ppp Device independent PPP interface
1849 108 block Compaq Next Generation Drive Array, fifth controller
1850 0 = /dev/cciss/c4d0 First logical drive, whole disk
1851 16 = /dev/cciss/c4d1 Second logical drive, whole disk
1852 ...
1853 240 = /dev/cciss/c4d15 16th logical drive, whole disk
1855 Partitions are handled the same way as for Mylex
1856 DAC960 (see major number 48) except that the limit on
1857 partitions is 15.
1859 109 char Reserved for logical volume manager
1861 109 block Compaq Next Generation Drive Array, sixth controller
1862 0 = /dev/cciss/c5d0 First logical drive, whole disk
1863 16 = /dev/cciss/c5d1 Second logical drive, whole disk
1864 ...
1865 240 = /dev/cciss/c5d15 16th logical drive, whole disk
1867 Partitions are handled the same way as for Mylex
1868 DAC960 (see major number 48) except that the limit on
1869 partitions is 15.
1871 110 char miroMEDIA Surround board
1872 0 = /dev/srnd0 First miroMEDIA Surround board
1873 1 = /dev/srnd1 Second miroMEDIA Surround board
1874 ...
1876 110 block Compaq Next Generation Drive Array, seventh controller
1877 0 = /dev/cciss/c6d0 First logical drive, whole disk
1878 16 = /dev/cciss/c6d1 Second logical drive, whole disk
1879 ...
1880 240 = /dev/cciss/c6d15 16th logical drive, whole disk
1882 Partitions are handled the same way as for Mylex
1883 DAC960 (see major number 48) except that the limit on
1884 partitions is 15.
1886 111 char
1888 111 block Compaq Next Generation Drive Array, eighth controller
1889 0 = /dev/cciss/c7d0 First logical drive, whole disk
1890 16 = /dev/cciss/c7d1 Second logical drive, whole disk
1891 ...
1892 240 = /dev/cciss/c7d15 16th logical drive, whole disk
1894 Partitions are handled the same way as for Mylex
1895 DAC960 (see major number 48) except that the limit on
1896 partitions is 15.
1898 112 char ISI serial card
1899 0 = /dev/ttyM0 First ISI port
1900 1 = /dev/ttyM1 Second ISI port
1901 ...
1903 There is currently a device-naming conflict between
1904 these and PAM multimodems (major 78).
1906 112 block IBM iSeries virtual disk
1907 0 = /dev/iseries/vda First virtual disk, whole disk
1908 8 = /dev/iseries/vdb Second virtual disk, whole disk
1909 ...
1910 200 = /dev/iseries/vdz 26th virtual disk, whole disk
1911 208 = /dev/iseries/vdaa 27th virtual disk, whole disk
1912 ...
1913 248 = /dev/iseries/vdaf 32nd virtual disk, whole disk
1915 Partitions are handled in the same way as for IDE
1916 disks (see major number 3) except that the limit on
1917 partitions is 7.
1919 113 char ISI serial card - alternate devices
1920 0 = /dev/cum0 Callout device for ttyM0
1921 1 = /dev/cum1 Callout device for ttyM1
1922 ...
1924 113 block IBM iSeries virtual CD-ROM
1925 0 = /dev/iseries/vcda First virtual CD-ROM
1926 1 = /dev/iseries/vcdb Second virtual CD-ROM
1927 ...
1929 114 char Picture Elements ISE board
1930 0 = /dev/ise0 First ISE board
1931 1 = /dev/ise1 Second ISE board
1932 ...
1933 128 = /dev/isex0 Control node for first ISE board
1934 129 = /dev/isex1 Control node for second ISE board
1935 ...
1937 The ISE board is an embedded computer, optimized for
1938 image processing. The /dev/iseN nodes are the general
1939 I/O access to the board, the /dev/isex0 nodes command
1940 nodes used to control the board.
1942 114 block IDE BIOS powered software RAID interfaces such as the
1943 Promise Fastrak
1945 0 = /dev/ataraid/d0
1946 1 = /dev/ataraid/d0p1
1947 2 = /dev/ataraid/d0p2
1948 ...
1949 16 = /dev/ataraid/d1
1950 17 = /dev/ataraid/d1p1
1951 18 = /dev/ataraid/d1p2
1952 ...
1953 255 = /dev/ataraid/d15p15
1955 Partitions are handled in the same way as for IDE
1956 disks (see major number 3) except that the limit on
1957 partitions is 15.
1959 115 char TI link cable devices (115 was formerly the console driver speaker)
1960 0 = /dev/tipar0 Parallel cable on first parallel port
1961 ...
1962 7 = /dev/tipar7 Parallel cable on seventh parallel port
1964 8 = /dev/tiser0 Serial cable on first serial port
1965 ...
1966 15 = /dev/tiser7 Serial cable on seventh serial port
1968 16 = /dev/tiusb0 First USB cable
1969 ...
1970 47 = /dev/tiusb31 32nd USB cable
1972 115 block NetWare (NWFS) Devices (0-255)
1974 The NWFS (NetWare) devices are used to present a
1975 collection of NetWare Mirror Groups or NetWare
1976 Partitions as a logical storage segment for
1977 use in mounting NetWare volumes. A maximum of
1978 256 NetWare volumes can be supported in a single
1979 machine.
1981 http://cgfa.telepac.pt/ftp2/kernel.org/linux/kernel/people/jmerkey/nwfs/
1983 0 = /dev/nwfs/v0 First NetWare (NWFS) Logical Volume
1984 1 = /dev/nwfs/v1 Second NetWare (NWFS) Logical Volume
1985 2 = /dev/nwfs/v2 Third NetWare (NWFS) Logical Volume
1986 ...
1987 255 = /dev/nwfs/v255 Last NetWare (NWFS) Logical Volume
1989 116 char Advanced Linux Sound Driver (ALSA)
1991 116 block MicroMemory battery backed RAM adapter (NVRAM)
1992 Supports 16 boards, 15 partitions each.
1993 Requested by neilb at cse.unsw.edu.au.
1995 0 = /dev/umem/d0 Whole of first board
1996 1 = /dev/umem/d0p1 First partition of first board
1997 2 = /dev/umem/d0p2 Second partition of first board
1998 15 = /dev/umem/d0p15 15th partition of first board
2000 16 = /dev/umem/d1 Whole of second board
2001 17 = /dev/umem/d1p1 First partition of second board
2002 ...
2003 255= /dev/umem/d15p15 15th partition of 16th board.
2005 117 char COSA/SRP synchronous serial card
2006 0 = /dev/cosa0c0 1st board, 1st channel
2007 1 = /dev/cosa0c1 1st board, 2nd channel
2008 ...
2009 16 = /dev/cosa1c0 2nd board, 1st channel
2010 17 = /dev/cosa1c1 2nd board, 2nd channel
2011 ...
2013 117 block Enterprise Volume Management System (EVMS)
2015 The EVMS driver uses a layered, plug-in model to provide
2016 unparalleled flexibility and extensibility in managing
2017 storage. This allows for easy expansion or customization
2018 of various levels of volume management. Requested by
2019 Mark Peloquin (peloquin at us.ibm.com).
2021 Note: EVMS populates and manages all the devnodes in
2022 /dev/evms.
2024 http://sf.net/projects/evms
2026 0 = /dev/evms/block_device EVMS block device
2027 1 = /dev/evms/legacyname1 First EVMS legacy device
2028 2 = /dev/evms/legacyname2 Second EVMS legacy device
2029 ...
2030 Both ranges can grow (down or up) until they meet.
2031 ...
2032 254 = /dev/evms/EVMSname2 Second EVMS native device
2033 255 = /dev/evms/EVMSname1 First EVMS native device
2035 Note: legacyname(s) are derived from the normal legacy
2036 device names. For example, /dev/hda5 would become
2037 /dev/evms/hda5.
2039 118 char IBM Cryptographic Accelerator
2040 0 = /dev/ica Virtual interface to all IBM Crypto Accelerators
2041 1 = /dev/ica0 IBMCA Device 0
2042 2 = /dev/ica1 IBMCA Device 1
2043 ...
2045 119 char VMware virtual network control
2046 0 = /dev/vnet0 1st virtual network
2047 1 = /dev/vnet1 2nd virtual network
2048 ...
2050 120-127 char LOCAL/EXPERIMENTAL USE
2052 120-127 block LOCAL/EXPERIMENTAL USE
2053 Allocated for local/experimental use. For devices not
2054 assigned official numbers, these ranges should be
2055 used in order to avoid conflicting with future assignments.
2057 128-135 char Unix98 PTY masters
2059 These devices should not have corresponding device
2060 nodes; instead they should be accessed through the
2061 /dev/ptmx cloning interface.
2063 128 block SCSI disk devices (128-143)
2064 0 = /dev/sddy 129th SCSI disk whole disk
2065 16 = /dev/sddz 130th SCSI disk whole disk
2066 32 = /dev/sdea 131th SCSI disk whole disk
2067 ...
2068 240 = /dev/sden 144th SCSI disk whole disk
2070 Partitions are handled in the same way as for IDE
2071 disks (see major number 3) except that the limit on
2072 partitions is 15.
2074 129 block SCSI disk devices (144-159)
2075 0 = /dev/sdeo 145th SCSI disk whole disk
2076 16 = /dev/sdep 146th SCSI disk whole disk
2077 32 = /dev/sdeq 147th SCSI disk whole disk
2078 ...
2079 240 = /dev/sdfd 160th SCSI disk whole disk
2081 Partitions are handled in the same way as for IDE
2082 disks (see major number 3) except that the limit on
2083 partitions is 15.
2085 130 char (Misc devices)
2087 130 block SCSI disk devices (160-175)
2088 0 = /dev/sdfe 161st SCSI disk whole disk
2089 16 = /dev/sdff 162nd SCSI disk whole disk
2090 32 = /dev/sdfg 163rd SCSI disk whole disk
2091 ...
2092 240 = /dev/sdft 176th SCSI disk whole disk
2094 Partitions are handled in the same way as for IDE
2095 disks (see major number 3) except that the limit on
2096 partitions is 15.
2098 131 block SCSI disk devices (176-191)
2099 0 = /dev/sdfu 177th SCSI disk whole disk
2100 16 = /dev/sdfv 178th SCSI disk whole disk
2101 32 = /dev/sdfw 179th SCSI disk whole disk
2102 ...
2103 240 = /dev/sdgj 192nd SCSI disk whole disk
2105 Partitions are handled in the same way as for IDE
2106 disks (see major number 3) except that the limit on
2107 partitions is 15.
2109 132 block SCSI disk devices (192-207)
2110 0 = /dev/sdgk 193rd SCSI disk whole disk
2111 16 = /dev/sdgl 194th SCSI disk whole disk
2112 32 = /dev/sdgm 195th SCSI disk whole disk
2113 ...
2114 240 = /dev/sdgz 208th SCSI disk whole disk
2116 Partitions are handled in the same way as for IDE
2117 disks (see major number 3) except that the limit on
2118 partitions is 15.
2120 133 block SCSI disk devices (208-223)
2121 0 = /dev/sdha 209th SCSI disk whole disk
2122 16 = /dev/sdhb 210th SCSI disk whole disk
2123 32 = /dev/sdhc 211th SCSI disk whole disk
2124 ...
2125 240 = /dev/sdhp 224th SCSI disk whole disk
2127 Partitions are handled in the same way as for IDE
2128 disks (see major number 3) except that the limit on
2129 partitions is 15.
2131 134 block SCSI disk devices (224-239)
2132 0 = /dev/sdhq 225th SCSI disk whole disk
2133 16 = /dev/sdhr 226th SCSI disk whole disk
2134 32 = /dev/sdhs 227th SCSI disk whole disk
2135 ...
2136 240 = /dev/sdif 240th SCSI disk whole disk
2138 Partitions are handled in the same way as for IDE
2139 disks (see major number 3) except that the limit on
2140 partitions is 15.
2142 135 block SCSI disk devices (240-255)
2143 0 = /dev/sdig 241st SCSI disk whole disk
2144 16 = /dev/sdih 242nd SCSI disk whole disk
2145 32 = /dev/sdih 243rd SCSI disk whole disk
2146 ...
2147 240 = /dev/sdiv 256th SCSI disk whole disk
2149 Partitions are handled in the same way as for IDE
2150 disks (see major number 3) except that the limit on
2151 partitions is 15.
2153 136-143 char Unix98 PTY slaves
2154 0 = /dev/pts/0 First Unix98 pseudo-TTY
2155 1 = /dev/pts/1 Second Unix98 pseudo-TTY
2156 ...
2158 These device nodes are automatically generated with
2159 the proper permissions and modes by mounting the
2160 devpts filesystem onto /dev/pts with the appropriate
2161 mount options (distribution dependent, however, on
2162 *most* distributions the appropriate options are
2163 "mode=0620,gid=<gid of the "tty" group>".)
2165 136 block Mylex DAC960 PCI RAID controller; ninth controller
2166 0 = /dev/rd/c8d0 First disk, whole disk
2167 8 = /dev/rd/c8d1 Second disk, whole disk
2168 ...
2169 248 = /dev/rd/c8d31 32nd disk, whole disk
2171 Partitions are handled as for major 48.
2173 137 block Mylex DAC960 PCI RAID controller; tenth controller
2174 0 = /dev/rd/c9d0 First disk, whole disk
2175 8 = /dev/rd/c9d1 Second disk, whole disk
2176 ...
2177 248 = /dev/rd/c9d31 32nd disk, whole disk
2179 Partitions are handled as for major 48.
2181 138 block Mylex DAC960 PCI RAID controller; eleventh controller
2182 0 = /dev/rd/c10d0 First disk, whole disk
2183 8 = /dev/rd/c10d1 Second disk, whole disk
2184 ...
2185 248 = /dev/rd/c10d31 32nd disk, whole disk
2187 Partitions are handled as for major 48.
2189 139 block Mylex DAC960 PCI RAID controller; twelfth controller
2190 0 = /dev/rd/c11d0 First disk, whole disk
2191 8 = /dev/rd/c11d1 Second disk, whole disk
2192 ...
2193 248 = /dev/rd/c11d31 32nd disk, whole disk
2195 Partitions are handled as for major 48.
2197 140 block Mylex DAC960 PCI RAID controller; thirteenth controller
2198 0 = /dev/rd/c12d0 First disk, whole disk
2199 8 = /dev/rd/c12d1 Second disk, whole disk
2200 ...
2201 248 = /dev/rd/c12d31 32nd disk, whole disk
2203 Partitions are handled as for major 48.
2205 141 block Mylex DAC960 PCI RAID controller; fourteenth controller
2206 0 = /dev/rd/c13d0 First disk, whole disk
2207 8 = /dev/rd/c13d1 Second disk, whole disk
2208 ...
2209 248 = /dev/rd/c13d31 32nd disk, whole disk
2211 Partitions are handled as for major 48.
2213 142 block Mylex DAC960 PCI RAID controller; fifteenth controller
2214 0 = /dev/rd/c14d0 First disk, whole disk
2215 8 = /dev/rd/c14d1 Second disk, whole disk
2216 ...
2217 248 = /dev/rd/c14d31 32nd disk, whole disk
2219 Partitions are handled as for major 48.
2221 143 block Mylex DAC960 PCI RAID controller; sixteenth controller
2222 0 = /dev/rd/c15d0 First disk, whole disk
2223 8 = /dev/rd/c15d1 Second disk, whole disk
2224 ...
2225 248 = /dev/rd/c15d31 32nd disk, whole disk
2227 Partitions are handled as for major 48.
2229 144 char Encapsulated PPP
2230 0 = /dev/pppox0 First PPP over Ethernet
2231 ...
2232 63 = /dev/pppox63 64th PPP over Ethernet
2234 This is primarily used for ADSL.
2236 The SST 5136-DN DeviceNet interface driver has been
2237 relocated to major 183 due to an unfortunate conflict.
2239 144 block Expansion Area #1 for more non-device (e.g. NFS) mounts
2240 0 = mounted device 256
2241 255 = mounted device 511
2243 145 char SAM9407-based soundcard
2244 0 = /dev/sam0_mixer
2245 1 = /dev/sam0_sequencer
2246 2 = /dev/sam0_midi00
2247 3 = /dev/sam0_dsp
2248 4 = /dev/sam0_audio
2249 6 = /dev/sam0_sndstat
2250 18 = /dev/sam0_midi01
2251 34 = /dev/sam0_midi02
2252 50 = /dev/sam0_midi03
2253 64 = /dev/sam1_mixer
2254 ...
2255 128 = /dev/sam2_mixer
2256 ...
2257 192 = /dev/sam3_mixer
2258 ...
2260 Device functions match OSS, but offer a number of
2261 addons, which are sam9407 specific. OSS can be
2262 operated simultaneously, taking care of the codec.
2264 145 block Expansion Area #2 for more non-device (e.g. NFS) mounts
2265 0 = mounted device 512
2266 255 = mounted device 767
2268 146 char SYSTRAM SCRAMNet mirrored-memory network
2269 0 = /dev/scramnet0 First SCRAMNet device
2270 1 = /dev/scramnet1 Second SCRAMNet device
2271 ...
2273 146 block Expansion Area #3 for more non-device (e.g. NFS) mounts
2274 0 = mounted device 768
2275 255 = mounted device 1023
2277 147 char Aureal Semiconductor Vortex Audio device
2278 0 = /dev/aureal0 First Aureal Vortex
2279 1 = /dev/aureal1 Second Aureal Vortex
2280 ...
2282 147 block Distributed Replicated Block Device (DRBD)
2283 0 = /dev/drbd0 First DRBD device
2284 1 = /dev/drbd1 Second DRBD device
2285 ...
2287 148 char Technology Concepts serial card
2288 0 = /dev/ttyT0 First TCL port
2289 1 = /dev/ttyT1 Second TCL port
2290 ...
2292 149 char Technology Concepts serial card - alternate devices
2293 0 = /dev/cut0 Callout device for ttyT0
2294 1 = /dev/cut0 Callout device for ttyT1
2295 ...
2297 150 char Real-Time Linux FIFOs
2298 0 = /dev/rtf0 First RTLinux FIFO
2299 1 = /dev/rtf1 Second RTLinux FIFO
2300 ...
2302 151 char DPT I2O SmartRaid V controller
2303 0 = /dev/dpti0 First DPT I2O adapter
2304 1 = /dev/dpti1 Second DPT I2O adapter
2305 ...
2307 152 char EtherDrive Control Device
2308 0 = /dev/etherd/ctl Connect/Disconnect an EtherDrive
2309 1 = /dev/etherd/err Monitor errors
2310 2 = /dev/etherd/raw Raw AoE packet monitor
2312 152 block EtherDrive Block Devices
2313 0 = /dev/etherd/0 EtherDrive 0
2314 ...
2315 255 = /dev/etherd/255 EtherDrive 255
2317 153 char SPI Bus Interface (sometimes referred to as MicroWire)
2318 0 = /dev/spi0 First SPI device on the bus
2319 1 = /dev/spi1 Second SPI device on the bus
2320 ...
2321 15 = /dev/spi15 Sixteenth SPI device on the bus
2323 153 block Enhanced Metadisk RAID (EMD) storage units
2324 0 = /dev/emd/0 First unit
2325 1 = /dev/emd/0p1 Partition 1 on First unit
2326 2 = /dev/emd/0p2 Partition 2 on First unit
2327 ...
2328 15 = /dev/emd/0p15 Partition 15 on First unit
2330 16 = /dev/emd/1 Second unit
2331 32 = /dev/emd/2 Third unit
2332 ...
2333 240 = /dev/emd/15 Sixteenth unit
2335 Partitions are handled in the same way as for IDE
2336 disks (see major number 3) except that the limit on
2337 partitions is 15.
2339 154 char Specialix RIO serial card
2340 0 = /dev/ttySR0 First RIO port
2341 ...
2342 255 = /dev/ttySR255 256th RIO port
2344 155 char Specialix RIO serial card - alternate devices
2345 0 = /dev/cusr0 Callout device for ttySR0
2346 ...
2347 255 = /dev/cusr255 Callout device for ttySR255
2349 156 char Specialix RIO serial card
2350 0 = /dev/ttySR256 257th RIO port
2351 ...
2352 255 = /dev/ttySR511 512th RIO port
2354 157 char Specialix RIO serial card - alternate devices
2355 0 = /dev/cusr256 Callout device for ttySR256
2356 ...
2357 255 = /dev/cusr511 Callout device for ttySR511
2359 158 char Dialogic GammaLink fax driver
2360 0 = /dev/gfax0 GammaLink channel 0
2361 1 = /dev/gfax1 GammaLink channel 1
2362 ...
2364 159 char RESERVED
2366 159 block RESERVED
2368 160 char General Purpose Instrument Bus (GPIB)
2369 0 = /dev/gpib0 First GPIB bus
2370 1 = /dev/gpib1 Second GPIB bus
2371 ...
2373 160 block Carmel 8-port SATA Disks on First Controller
2374 0 = /dev/carmel/0 SATA disk 0 whole disk
2375 1 = /dev/carmel/0p1 SATA disk 0 partition 1
2376 ...
2377 31 = /dev/carmel/0p31 SATA disk 0 partition 31
2379 32 = /dev/carmel/1 SATA disk 1 whole disk
2380 64 = /dev/carmel/2 SATA disk 2 whole disk
2381 ...
2382 224 = /dev/carmel/7 SATA disk 7 whole disk
2384 Partitions are handled in the same way as for IDE
2385 disks (see major number 3) except that the limit on
2386 partitions is 31.
2388 161 char IrCOMM devices (IrDA serial/parallel emulation)
2389 0 = /dev/ircomm0 First IrCOMM device
2390 1 = /dev/ircomm1 Second IrCOMM device
2391 ...
2392 16 = /dev/irlpt0 First IrLPT device
2393 17 = /dev/irlpt1 Second IrLPT device
2394 ...
2396 161 block Carmel 8-port SATA Disks on Second Controller
2397 0 = /dev/carmel/8 SATA disk 8 whole disk
2398 1 = /dev/carmel/8p1 SATA disk 8 partition 1
2399 ...
2400 31 = /dev/carmel/8p31 SATA disk 8 partition 31
2402 32 = /dev/carmel/9 SATA disk 9 whole disk
2403 64 = /dev/carmel/10 SATA disk 10 whole disk
2404 ...
2405 224 = /dev/carmel/15 SATA disk 15 whole disk
2407 Partitions are handled in the same way as for IDE
2408 disks (see major number 3) except that the limit on
2409 partitions is 31.
2411 162 char Raw block device interface
2412 0 = /dev/rawctl Raw I/O control device
2413 1 = /dev/raw/raw1 First raw I/O device
2414 2 = /dev/raw/raw2 Second raw I/O device
2415 ...
2416 max minor number of raw device is set by kernel config
2417 MAX_RAW_DEVS or raw module parameter 'max_raw_devs'
2419 163 char
2421 164 char Chase Research AT/PCI-Fast serial card
2422 0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0
2423 ...
2424 15 = /dev/ttyCH15 AT/PCI-Fast board 0, port 15
2425 16 = /dev/ttyCH16 AT/PCI-Fast board 1, port 0
2426 ...
2427 31 = /dev/ttyCH31 AT/PCI-Fast board 1, port 15
2428 32 = /dev/ttyCH32 AT/PCI-Fast board 2, port 0
2429 ...
2430 47 = /dev/ttyCH47 AT/PCI-Fast board 2, port 15
2431 48 = /dev/ttyCH48 AT/PCI-Fast board 3, port 0
2432 ...
2433 63 = /dev/ttyCH63 AT/PCI-Fast board 3, port 15
2435 165 char Chase Research AT/PCI-Fast serial card - alternate devices
2436 0 = /dev/cuch0 Callout device for ttyCH0
2437 ...
2438 63 = /dev/cuch63 Callout device for ttyCH63
2440 166 char ACM USB modems
2441 0 = /dev/ttyACM0 First ACM modem
2442 1 = /dev/ttyACM1 Second ACM modem
2443 ...
2445 167 char ACM USB modems - alternate devices
2446 0 = /dev/cuacm0 Callout device for ttyACM0
2447 1 = /dev/cuacm1 Callout device for ttyACM1
2448 ...
2450 168 char Eracom CSA7000 PCI encryption adaptor
2451 0 = /dev/ecsa0 First CSA7000
2452 1 = /dev/ecsa1 Second CSA7000
2453 ...
2455 169 char Eracom CSA8000 PCI encryption adaptor
2456 0 = /dev/ecsa8-0 First CSA8000
2457 1 = /dev/ecsa8-1 Second CSA8000
2458 ...
2460 170 char AMI MegaRAC remote access controller
2461 0 = /dev/megarac0 First MegaRAC card
2462 1 = /dev/megarac1 Second MegaRAC card
2463 ...
2465 171 char Reserved for IEEE 1394 (Firewire)
2467 172 char Moxa Intellio serial card
2468 0 = /dev/ttyMX0 First Moxa port
2469 1 = /dev/ttyMX1 Second Moxa port
2470 ...
2471 127 = /dev/ttyMX127 128th Moxa port
2472 128 = /dev/moxactl Moxa control port
2474 173 char Moxa Intellio serial card - alternate devices
2475 0 = /dev/cumx0 Callout device for ttyMX0
2476 1 = /dev/cumx1 Callout device for ttyMX1
2477 ...
2478 127 = /dev/cumx127 Callout device for ttyMX127
2480 174 char SmartIO serial card
2481 0 = /dev/ttySI0 First SmartIO port
2482 1 = /dev/ttySI1 Second SmartIO port
2483 ...
2485 175 char SmartIO serial card - alternate devices
2486 0 = /dev/cusi0 Callout device for ttySI0
2487 1 = /dev/cusi1 Callout device for ttySI1
2488 ...
2490 176 char nCipher nFast PCI crypto accelerator
2491 0 = /dev/nfastpci0 First nFast PCI device
2492 1 = /dev/nfastpci1 First nFast PCI device
2493 ...
2495 177 char TI PCILynx memory spaces
2496 0 = /dev/pcilynx/aux0 AUX space of first PCILynx card
2497 ...
2498 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
2499 16 = /dev/pcilynx/rom0 ROM space of first PCILynx card
2500 ...
2501 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
2502 32 = /dev/pcilynx/ram0 RAM space of first PCILynx card
2503 ...
2504 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
2506 178 char Giganet cLAN1xxx virtual interface adapter
2507 0 = /dev/clanvi0 First cLAN adapter
2508 1 = /dev/clanvi1 Second cLAN adapter
2509 ...
2511 179 block MMC block devices
2512 0 = /dev/mmcblk0 First SD/MMC card
2513 1 = /dev/mmcblk0p1 First partition on first MMC card
2514 8 = /dev/mmcblk1 Second SD/MMC card
2515 ...
2517 The start of next SD/MMC card can be configured with
2518 CONFIG_MMC_BLOCK_MINORS, or overridden at boot/modprobe
2519 time using the mmcblk.perdev_minors option. That would
2520 bump the offset between each card to be the configured
2521 value instead of the default 8.
2523 179 char CCube DVXChip-based PCI products
2524 0 = /dev/dvxirq0 First DVX device
2525 1 = /dev/dvxirq1 Second DVX device
2526 ...
2528 180 char USB devices
2529 0 = /dev/usb/lp0 First USB printer
2530 ...
2531 15 = /dev/usb/lp15 16th USB printer
2532 48 = /dev/usb/scanner0 First USB scanner
2533 ...
2534 63 = /dev/usb/scanner15 16th USB scanner
2535 64 = /dev/usb/rio500 Diamond Rio 500
2536 65 = /dev/usb/usblcd USBLCD Interface (info@usblcd.de)
2537 66 = /dev/usb/cpad0 Synaptics cPad (mouse/LCD)
2538 96 = /dev/usb/hiddev0 1st USB HID device
2539 ...
2540 111 = /dev/usb/hiddev15 16th USB HID device
2541 112 = /dev/usb/auer0 1st auerswald ISDN device
2542 ...
2543 127 = /dev/usb/auer15 16th auerswald ISDN device
2544 128 = /dev/usb/brlvgr0 First Braille Voyager device
2545 ...
2546 131 = /dev/usb/brlvgr3 Fourth Braille Voyager device
2547 132 = /dev/usb/idmouse ID Mouse (fingerprint scanner) device
2548 133 = /dev/usb/sisusbvga1 First SiSUSB VGA device
2549 ...
2550 140 = /dev/usb/sisusbvga8 Eighth SISUSB VGA device
2551 144 = /dev/usb/lcd USB LCD device
2552 160 = /dev/usb/legousbtower0 1st USB Legotower device
2553 ...
2554 175 = /dev/usb/legousbtower15 16th USB Legotower device
2555 176 = /dev/usb/usbtmc1 First USB TMC device
2556 ...
2557 191 = /dev/usb/usbtmc16 16th USB TMC device
2558 192 = /dev/usb/yurex1 First USB Yurex device
2559 ...
2560 209 = /dev/usb/yurex16 16th USB Yurex device
2562 180 block USB block devices
2563 0 = /dev/uba First USB block device
2564 8 = /dev/ubb Second USB block device
2565 16 = /dev/ubc Third USB block device
2566 ...
2568 181 char Conrad Electronic parallel port radio clocks
2569 0 = /dev/pcfclock0 First Conrad radio clock
2570 1 = /dev/pcfclock1 Second Conrad radio clock
2571 ...
2573 182 char Picture Elements THR2 binarizer
2574 0 = /dev/pethr0 First THR2 board
2575 1 = /dev/pethr1 Second THR2 board
2576 ...
2578 183 char SST 5136-DN DeviceNet interface
2579 0 = /dev/ss5136dn0 First DeviceNet interface
2580 1 = /dev/ss5136dn1 Second DeviceNet interface
2581 ...
2583 This device used to be assigned to major number 144.
2584 It had to be moved due to an unfortunate conflict.
2586 184 char Picture Elements' video simulator/sender
2587 0 = /dev/pevss0 First sender board
2588 1 = /dev/pevss1 Second sender board
2589 ...
2591 185 char InterMezzo high availability file system
2592 0 = /dev/intermezzo0 First cache manager
2593 1 = /dev/intermezzo1 Second cache manager
2594 ...
2596 See http://web.archive.org/web/20080115195241/
2597 http://inter-mezzo.org/index.html
2599 186 char Object-based storage control device
2600 0 = /dev/obd0 First obd control device
2601 1 = /dev/obd1 Second obd control device
2602 ...
2604 See ftp://ftp.lustre.org/pub/obd for code and information.
2606 187 char DESkey hardware encryption device
2607 0 = /dev/deskey0 First DES key
2608 1 = /dev/deskey1 Second DES key
2609 ...
2611 188 char USB serial converters
2612 0 = /dev/ttyUSB0 First USB serial converter
2613 1 = /dev/ttyUSB1 Second USB serial converter
2614 ...
2616 189 char USB serial converters - alternate devices
2617 0 = /dev/cuusb0 Callout device for ttyUSB0
2618 1 = /dev/cuusb1 Callout device for ttyUSB1
2619 ...
2621 190 char Kansas City tracker/tuner card
2622 0 = /dev/kctt0 First KCT/T card
2623 1 = /dev/kctt1 Second KCT/T card
2624 ...
2626 191 char Reserved for PCMCIA
2628 192 char Kernel profiling interface
2629 0 = /dev/profile Profiling control device
2630 1 = /dev/profile0 Profiling device for CPU 0
2631 2 = /dev/profile1 Profiling device for CPU 1
2632 ...
2634 193 char Kernel event-tracing interface
2635 0 = /dev/trace Tracing control device
2636 1 = /dev/trace0 Tracing device for CPU 0
2637 2 = /dev/trace1 Tracing device for CPU 1
2638 ...
2640 194 char linVideoStreams (LINVS)
2641 0 = /dev/mvideo/status0 Video compression status
2642 1 = /dev/mvideo/stream0 Video stream
2643 2 = /dev/mvideo/frame0 Single compressed frame
2644 3 = /dev/mvideo/rawframe0 Raw uncompressed frame
2645 4 = /dev/mvideo/codec0 Direct codec access
2646 5 = /dev/mvideo/video4linux0 Video4Linux compatibility
2648 16 = /dev/mvideo/status1 Second device
2649 ...
2650 32 = /dev/mvideo/status2 Third device
2651 ...
2652 ...
2653 240 = /dev/mvideo/status15 16th device
2654 ...
2656 195 char Nvidia graphics devices
2657 0 = /dev/nvidia0 First Nvidia card
2658 1 = /dev/nvidia1 Second Nvidia card
2659 ...
2660 255 = /dev/nvidiactl Nvidia card control device
2662 196 char Tormenta T1 card
2663 0 = /dev/tor/0 Master control channel for all cards
2664 1 = /dev/tor/1 First DS0
2665 2 = /dev/tor/2 Second DS0
2666 ...
2667 48 = /dev/tor/48 48th DS0
2668 49 = /dev/tor/49 First pseudo-channel
2669 50 = /dev/tor/50 Second pseudo-channel
2670 ...
2672 197 char OpenTNF tracing facility
2673 0 = /dev/tnf/t0 Trace 0 data extraction
2674 1 = /dev/tnf/t1 Trace 1 data extraction
2675 ...
2676 128 = /dev/tnf/status Tracing facility status
2677 130 = /dev/tnf/trace Tracing device
2679 198 char Total Impact TPMP2 quad coprocessor PCI card
2680 0 = /dev/tpmp2/0 First card
2681 1 = /dev/tpmp2/1 Second card
2682 ...
2684 199 char Veritas volume manager (VxVM) volumes
2685 0 = /dev/vx/rdsk/*/* First volume
2686 1 = /dev/vx/rdsk/*/* Second volume
2687 ...
2689 199 block Veritas volume manager (VxVM) volumes
2690 0 = /dev/vx/dsk/*/* First volume
2691 1 = /dev/vx/dsk/*/* Second volume
2692 ...
2694 The namespace in these directories is maintained by
2695 the user space VxVM software.
2697 200 char Veritas VxVM configuration interface
2698 0 = /dev/vx/config Configuration access node
2699 1 = /dev/vx/trace Volume i/o trace access node
2700 2 = /dev/vx/iod Volume i/o daemon access node
2701 3 = /dev/vx/info Volume information access node
2702 4 = /dev/vx/task Volume tasks access node
2703 5 = /dev/vx/taskmon Volume tasks monitor daemon
2705 201 char Veritas VxVM dynamic multipathing driver
2706 0 = /dev/vx/rdmp/* First multipath device
2707 1 = /dev/vx/rdmp/* Second multipath device
2708 ...
2709 201 block Veritas VxVM dynamic multipathing driver
2710 0 = /dev/vx/dmp/* First multipath device
2711 1 = /dev/vx/dmp/* Second multipath device
2712 ...
2714 The namespace in these directories is maintained by
2715 the user space VxVM software.
2717 202 char CPU model-specific registers
2718 0 = /dev/cpu/0/msr MSRs on CPU 0
2719 1 = /dev/cpu/1/msr MSRs on CPU 1
2720 ...
2722 202 block Xen Virtual Block Device
2723 0 = /dev/xvda First Xen VBD whole disk
2724 16 = /dev/xvdb Second Xen VBD whole disk
2725 32 = /dev/xvdc Third Xen VBD whole disk
2726 ...
2727 240 = /dev/xvdp Sixteenth Xen VBD whole disk
2729 Partitions are handled in the same way as for IDE
2730 disks (see major number 3) except that the limit on
2731 partitions is 15.
2733 203 char CPU CPUID information
2734 0 = /dev/cpu/0/cpuid CPUID on CPU 0
2735 1 = /dev/cpu/1/cpuid CPUID on CPU 1
2736 ...
2738 204 char Low-density serial ports
2739 0 = /dev/ttyLU0 LinkUp Systems L72xx UART - port 0
2740 1 = /dev/ttyLU1 LinkUp Systems L72xx UART - port 1
2741 2 = /dev/ttyLU2 LinkUp Systems L72xx UART - port 2
2742 3 = /dev/ttyLU3 LinkUp Systems L72xx UART - port 3
2743 4 = /dev/ttyFB0 Intel Footbridge (ARM)
2744 5 = /dev/ttySA0 StrongARM builtin serial port 0
2745 6 = /dev/ttySA1 StrongARM builtin serial port 1
2746 7 = /dev/ttySA2 StrongARM builtin serial port 2
2747 8 = /dev/ttySC0 SCI serial port (SuperH) - port 0
2748 9 = /dev/ttySC1 SCI serial port (SuperH) - port 1
2749 10 = /dev/ttySC2 SCI serial port (SuperH) - port 2
2750 11 = /dev/ttySC3 SCI serial port (SuperH) - port 3
2751 12 = /dev/ttyFW0 Firmware console - port 0
2752 13 = /dev/ttyFW1 Firmware console - port 1
2753 14 = /dev/ttyFW2 Firmware console - port 2
2754 15 = /dev/ttyFW3 Firmware console - port 3
2755 16 = /dev/ttyAM0 ARM "AMBA" serial port 0
2756 ...
2757 31 = /dev/ttyAM15 ARM "AMBA" serial port 15
2758 32 = /dev/ttyDB0 DataBooster serial port 0
2759 ...
2760 39 = /dev/ttyDB7 DataBooster serial port 7
2761 40 = /dev/ttySG0 SGI Altix console port
2762 41 = /dev/ttySMX0 Motorola i.MX - port 0
2763 42 = /dev/ttySMX1 Motorola i.MX - port 1
2764 43 = /dev/ttySMX2 Motorola i.MX - port 2
2765 44 = /dev/ttyMM0 Marvell MPSC - port 0
2766 45 = /dev/ttyMM1 Marvell MPSC - port 1
2767 46 = /dev/ttyCPM0 PPC CPM (SCC or SMC) - port 0
2768 ...
2769 47 = /dev/ttyCPM5 PPC CPM (SCC or SMC) - port 5
2770 50 = /dev/ttyIOC0 Altix serial card
2771 ...
2772 81 = /dev/ttyIOC31 Altix serial card
2773 82 = /dev/ttyVR0 NEC VR4100 series SIU
2774 83 = /dev/ttyVR1 NEC VR4100 series DSIU
2775 84 = /dev/ttyIOC84 Altix ioc4 serial card
2776 ...
2777 115 = /dev/ttyIOC115 Altix ioc4 serial card
2778 116 = /dev/ttySIOC0 Altix ioc3 serial card
2779 ...
2780 147 = /dev/ttySIOC31 Altix ioc3 serial card
2781 148 = /dev/ttyPSC0 PPC PSC - port 0
2782 ...
2783 153 = /dev/ttyPSC5 PPC PSC - port 5
2784 154 = /dev/ttyAT0 ATMEL serial port 0
2785 ...
2786 169 = /dev/ttyAT15 ATMEL serial port 15
2787 170 = /dev/ttyNX0 Hilscher netX serial port 0
2788 ...
2789 185 = /dev/ttyNX15 Hilscher netX serial port 15
2790 186 = /dev/ttyJ0 JTAG1 DCC protocol based serial port emulation
2791 187 = /dev/ttyUL0 Xilinx uartlite - port 0
2792 ...
2793 190 = /dev/ttyUL3 Xilinx uartlite - port 3
2794 191 = /dev/xvc0 Xen virtual console - port 0
2795 192 = /dev/ttyPZ0 pmac_zilog - port 0
2796 ...
2797 195 = /dev/ttyPZ3 pmac_zilog - port 3
2798 196 = /dev/ttyTX0 TX39/49 serial port 0
2799 ...
2800 204 = /dev/ttyTX7 TX39/49 serial port 7
2801 205 = /dev/ttySC0 SC26xx serial port 0
2802 206 = /dev/ttySC1 SC26xx serial port 1
2803 207 = /dev/ttySC2 SC26xx serial port 2
2804 208 = /dev/ttySC3 SC26xx serial port 3
2805 209 = /dev/ttyMAX0 MAX3100 serial port 0
2806 210 = /dev/ttyMAX1 MAX3100 serial port 1
2807 211 = /dev/ttyMAX2 MAX3100 serial port 2
2808 212 = /dev/ttyMAX3 MAX3100 serial port 3
2810 205 char Low-density serial ports (alternate device)
2811 0 = /dev/culu0 Callout device for ttyLU0
2812 1 = /dev/culu1 Callout device for ttyLU1
2813 2 = /dev/culu2 Callout device for ttyLU2
2814 3 = /dev/culu3 Callout device for ttyLU3
2815 4 = /dev/cufb0 Callout device for ttyFB0
2816 5 = /dev/cusa0 Callout device for ttySA0
2817 6 = /dev/cusa1 Callout device for ttySA1
2818 7 = /dev/cusa2 Callout device for ttySA2
2819 8 = /dev/cusc0 Callout device for ttySC0
2820 9 = /dev/cusc1 Callout device for ttySC1
2821 10 = /dev/cusc2 Callout device for ttySC2
2822 11 = /dev/cusc3 Callout device for ttySC3
2823 12 = /dev/cufw0 Callout device for ttyFW0
2824 13 = /dev/cufw1 Callout device for ttyFW1
2825 14 = /dev/cufw2 Callout device for ttyFW2
2826 15 = /dev/cufw3 Callout device for ttyFW3
2827 16 = /dev/cuam0 Callout device for ttyAM0
2828 ...
2829 31 = /dev/cuam15 Callout device for ttyAM15
2830 32 = /dev/cudb0 Callout device for ttyDB0
2831 ...
2832 39 = /dev/cudb7 Callout device for ttyDB7
2833 40 = /dev/cusg0 Callout device for ttySG0
2834 41 = /dev/ttycusmx0 Callout device for ttySMX0
2835 42 = /dev/ttycusmx1 Callout device for ttySMX1
2836 43 = /dev/ttycusmx2 Callout device for ttySMX2
2837 46 = /dev/cucpm0 Callout device for ttyCPM0
2838 ...
2839 49 = /dev/cucpm5 Callout device for ttyCPM5
2840 50 = /dev/cuioc40 Callout device for ttyIOC40
2841 ...
2842 81 = /dev/cuioc431 Callout device for ttyIOC431
2843 82 = /dev/cuvr0 Callout device for ttyVR0
2844 83 = /dev/cuvr1 Callout device for ttyVR1
2846 206 char OnStream SC-x0 tape devices
2847 0 = /dev/osst0 First OnStream SCSI tape, mode 0
2848 1 = /dev/osst1 Second OnStream SCSI tape, mode 0
2849 ...
2850 32 = /dev/osst0l First OnStream SCSI tape, mode 1
2851 33 = /dev/osst1l Second OnStream SCSI tape, mode 1
2852 ...
2853 64 = /dev/osst0m First OnStream SCSI tape, mode 2
2854 65 = /dev/osst1m Second OnStream SCSI tape, mode 2
2855 ...
2856 96 = /dev/osst0a First OnStream SCSI tape, mode 3
2857 97 = /dev/osst1a Second OnStream SCSI tape, mode 3
2858 ...
2859 128 = /dev/nosst0 No rewind version of /dev/osst0
2860 129 = /dev/nosst1 No rewind version of /dev/osst1
2861 ...
2862 160 = /dev/nosst0l No rewind version of /dev/osst0l
2863 161 = /dev/nosst1l No rewind version of /dev/osst1l
2864 ...
2865 192 = /dev/nosst0m No rewind version of /dev/osst0m
2866 193 = /dev/nosst1m No rewind version of /dev/osst1m
2867 ...
2868 224 = /dev/nosst0a No rewind version of /dev/osst0a
2869 225 = /dev/nosst1a No rewind version of /dev/osst1a
2870 ...
2872 The OnStream SC-x0 SCSI tapes do not support the
2873 standard SCSI SASD command set and therefore need
2874 their own driver "osst". Note that the IDE, USB (and
2875 maybe ParPort) versions may be driven via ide-scsi or
2876 usb-storage SCSI emulation and this osst device and
2877 driver as well. The ADR-x0 drives are QIC-157
2878 compliant and don't need osst.
2880 207 char Compaq ProLiant health feature indicate
2881 0 = /dev/cpqhealth/cpqw Redirector interface
2882 1 = /dev/cpqhealth/crom EISA CROM
2883 2 = /dev/cpqhealth/cdt Data Table
2884 3 = /dev/cpqhealth/cevt Event Log
2885 4 = /dev/cpqhealth/casr Automatic Server Recovery
2886 5 = /dev/cpqhealth/cecc ECC Memory
2887 6 = /dev/cpqhealth/cmca Machine Check Architecture
2888 7 = /dev/cpqhealth/ccsm Deprecated CDT
2889 8 = /dev/cpqhealth/cnmi NMI Handling
2890 9 = /dev/cpqhealth/css Sideshow Management
2891 10 = /dev/cpqhealth/cram CMOS interface
2892 11 = /dev/cpqhealth/cpci PCI IRQ interface
2894 208 char User space serial ports
2895 0 = /dev/ttyU0 First user space serial port
2896 1 = /dev/ttyU1 Second user space serial port
2897 ...
2899 209 char User space serial ports (alternate devices)
2900 0 = /dev/cuu0 Callout device for ttyU0
2901 1 = /dev/cuu1 Callout device for ttyU1
2902 ...
2904 210 char SBE, Inc. sync/async serial card
2905 0 = /dev/sbei/wxcfg0 Configuration device for board 0
2906 1 = /dev/sbei/dld0 Download device for board 0
2907 2 = /dev/sbei/wan00 WAN device, port 0, board 0
2908 3 = /dev/sbei/wan01 WAN device, port 1, board 0
2909 4 = /dev/sbei/wan02 WAN device, port 2, board 0
2910 5 = /dev/sbei/wan03 WAN device, port 3, board 0
2911 6 = /dev/sbei/wanc00 WAN clone device, port 0, board 0
2912 7 = /dev/sbei/wanc01 WAN clone device, port 1, board 0
2913 8 = /dev/sbei/wanc02 WAN clone device, port 2, board 0
2914 9 = /dev/sbei/wanc03 WAN clone device, port 3, board 0
2915 10 = /dev/sbei/wxcfg1 Configuration device for board 1
2916 11 = /dev/sbei/dld1 Download device for board 1
2917 12 = /dev/sbei/wan10 WAN device, port 0, board 1
2918 13 = /dev/sbei/wan11 WAN device, port 1, board 1
2919 14 = /dev/sbei/wan12 WAN device, port 2, board 1
2920 15 = /dev/sbei/wan13 WAN device, port 3, board 1
2921 16 = /dev/sbei/wanc10 WAN clone device, port 0, board 1
2922 17 = /dev/sbei/wanc11 WAN clone device, port 1, board 1
2923 18 = /dev/sbei/wanc12 WAN clone device, port 2, board 1
2924 19 = /dev/sbei/wanc13 WAN clone device, port 3, board 1
2925 ...
2927 Yes, each board is really spaced 10 (decimal) apart.
2929 211 char Addinum CPCI1500 digital I/O card
2930 0 = /dev/addinum/cpci1500/0 First CPCI1500 card
2931 1 = /dev/addinum/cpci1500/1 Second CPCI1500 card
2932 ...
2934 212 char LinuxTV.org DVB driver subsystem
2935 0 = /dev/dvb/adapter0/video0 first video decoder of first card
2936 1 = /dev/dvb/adapter0/audio0 first audio decoder of first card
2937 2 = /dev/dvb/adapter0/sec0 (obsolete/unused)
2938 3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2939 4 = /dev/dvb/adapter0/demux0 first demux device of first card
2940 5 = /dev/dvb/adapter0/dvr0 first digital video recoder device of first card
2941 6 = /dev/dvb/adapter0/ca0 first common access port of first card
2942 7 = /dev/dvb/adapter0/net0 first network device of first card
2943 8 = /dev/dvb/adapter0/osd0 first on-screen-display device of first card
2944 9 = /dev/dvb/adapter0/video1 second video decoder of first card
2945 ...
2946 64 = /dev/dvb/adapter1/video0 first video decoder of second card
2947 ...
2948 128 = /dev/dvb/adapter2/video0 first video decoder of third card
2949 ...
2950 196 = /dev/dvb/adapter3/video0 first video decoder of fourth card
2952 216 char Bluetooth RFCOMM TTY devices
2953 0 = /dev/rfcomm0 First Bluetooth RFCOMM TTY device
2954 1 = /dev/rfcomm1 Second Bluetooth RFCOMM TTY device
2955 ...
2957 217 char Bluetooth RFCOMM TTY devices (alternate devices)
2958 0 = /dev/curf0 Callout device for rfcomm0
2959 1 = /dev/curf1 Callout device for rfcomm1
2960 ...
2962 218 char The Logical Company bus Unibus/Qbus adapters
2963 0 = /dev/logicalco/bci/0 First bus adapter
2964 1 = /dev/logicalco/bci/1 First bus adapter
2965 ...
2967 219 char The Logical Company DCI-1300 digital I/O card
2968 0 = /dev/logicalco/dci1300/0 First DCI-1300 card
2969 1 = /dev/logicalco/dci1300/1 Second DCI-1300 card
2970 ...
2972 220 char Myricom Myrinet "GM" board
2973 0 = /dev/myricom/gm0 First Myrinet GM board
2974 1 = /dev/myricom/gmp0 First board "root access"
2975 2 = /dev/myricom/gm1 Second Myrinet GM board
2976 3 = /dev/myricom/gmp1 Second board "root access"
2977 ...
2979 221 char VME bus
2980 0 = /dev/bus/vme/m0 First master image
2981 1 = /dev/bus/vme/m1 Second master image
2982 2 = /dev/bus/vme/m2 Third master image
2983 3 = /dev/bus/vme/m3 Fourth master image
2984 4 = /dev/bus/vme/s0 First slave image
2985 5 = /dev/bus/vme/s1 Second slave image
2986 6 = /dev/bus/vme/s2 Third slave image
2987 7 = /dev/bus/vme/s3 Fourth slave image
2988 8 = /dev/bus/vme/ctl Control
2990 It is expected that all VME bus drivers will use the
2991 same interface. For interface documentation see
2992 http://www.vmelinux.org/.
2994 224 char A2232 serial card
2995 0 = /dev/ttyY0 First A2232 port
2996 1 = /dev/ttyY1 Second A2232 port
2997 ...
2999 225 char A2232 serial card (alternate devices)
3000 0 = /dev/cuy0 Callout device for ttyY0
3001 1 = /dev/cuy1 Callout device for ttyY1
3002 ...
3004 226 char Direct Rendering Infrastructure (DRI)
3005 0 = /dev/dri/card0 First graphics card
3006 1 = /dev/dri/card1 Second graphics card
3007 ...
3009 227 char IBM 3270 terminal Unix tty access
3010 1 = /dev/3270/tty1 First 3270 terminal
3011 2 = /dev/3270/tty2 Seconds 3270 terminal
3012 ...
3014 228 char IBM 3270 terminal block-mode access
3015 0 = /dev/3270/tub Controlling interface
3016 1 = /dev/3270/tub1 First 3270 terminal
3017 2 = /dev/3270/tub2 Second 3270 terminal
3018 ...
3020 229 char IBM iSeries/pSeries virtual console
3021 0 = /dev/hvc0 First console port
3022 1 = /dev/hvc1 Second console port
3023 ...
3025 230 char IBM iSeries virtual tape
3026 0 = /dev/iseries/vt0 First virtual tape, mode 0
3027 1 = /dev/iseries/vt1 Second virtual tape, mode 0
3028 ...
3029 32 = /dev/iseries/vt0l First virtual tape, mode 1
3030 33 = /dev/iseries/vt1l Second virtual tape, mode 1
3031 ...
3032 64 = /dev/iseries/vt0m First virtual tape, mode 2
3033 65 = /dev/iseries/vt1m Second virtual tape, mode 2
3034 ...
3035 96 = /dev/iseries/vt0a First virtual tape, mode 3
3036 97 = /dev/iseries/vt1a Second virtual tape, mode 3
3037 ...
3038 128 = /dev/iseries/nvt0 First virtual tape, mode 0, no rewind
3039 129 = /dev/iseries/nvt1 Second virtual tape, mode 0, no rewind
3040 ...
3041 160 = /dev/iseries/nvt0l First virtual tape, mode 1, no rewind
3042 161 = /dev/iseries/nvt1l Second virtual tape, mode 1, no rewind
3043 ...
3044 192 = /dev/iseries/nvt0m First virtual tape, mode 2, no rewind
3045 193 = /dev/iseries/nvt1m Second virtual tape, mode 2, no rewind
3046 ...
3047 224 = /dev/iseries/nvt0a First virtual tape, mode 3, no rewind
3048 225 = /dev/iseries/nvt1a Second virtual tape, mode 3, no rewind
3049 ...
3051 "No rewind" refers to the omission of the default
3052 automatic rewind on device close. The MTREW or MTOFFL
3053 ioctl()'s can be used to rewind the tape regardless of
3054 the device used to access it.
3056 231 char InfiniBand
3057 0 = /dev/infiniband/umad0
3058 1 = /dev/infiniband/umad1
3059 ...
3060 63 = /dev/infiniband/umad63 63rd InfiniBandMad device
3061 64 = /dev/infiniband/issm0 First InfiniBand IsSM device
3062 65 = /dev/infiniband/issm1 Second InfiniBand IsSM device
3063 ...
3064 127 = /dev/infiniband/issm63 63rd InfiniBand IsSM device
3065 128 = /dev/infiniband/uverbs0 First InfiniBand verbs device
3066 129 = /dev/infiniband/uverbs1 Second InfiniBand verbs device
3067 ...
3068 159 = /dev/infiniband/uverbs31 31st InfiniBand verbs device
3070 232 char Biometric Devices
3071 0 = /dev/biometric/sensor0/fingerprint first fingerprint sensor on first device
3072 1 = /dev/biometric/sensor0/iris first iris sensor on first device
3073 2 = /dev/biometric/sensor0/retina first retina sensor on first device
3074 3 = /dev/biometric/sensor0/voiceprint first voiceprint sensor on first device
3075 4 = /dev/biometric/sensor0/facial first facial sensor on first device
3076 5 = /dev/biometric/sensor0/hand first hand sensor on first device
3077 ...
3078 10 = /dev/biometric/sensor1/fingerprint first fingerprint sensor on second device
3079 ...
3080 20 = /dev/biometric/sensor2/fingerprint first fingerprint sensor on third device
3081 ...
3083 233 char PathScale InfiniPath interconnect
3084 0 = /dev/ipath Primary device for programs (any unit)
3085 1 = /dev/ipath0 Access specifically to unit 0
3086 2 = /dev/ipath1 Access specifically to unit 1
3087 ...
3088 4 = /dev/ipath3 Access specifically to unit 3
3089 129 = /dev/ipath_sma Device used by Subnet Management Agent
3090 130 = /dev/ipath_diag Device used by diagnostics programs
3092 234-239 UNASSIGNED
3094 240-254 char LOCAL/EXPERIMENTAL USE
3096 240-254 block LOCAL/EXPERIMENTAL USE
3097 Allocated for local/experimental use. For devices not
3098 assigned official numbers, these ranges should be
3099 used in order to avoid conflicting with future assignments.
3101 255 char RESERVED
3103 255 block RESERVED
3105 This major is reserved to assist the expansion to a
3106 larger number space. No device nodes with this major
3107 should ever be created on the filesystem.
3108 (This is probably not true anymore, but I'll leave it
3109 for now /Torben)
3111 ---LARGE MAJORS!!!!!---
3113 256 char Equinox SST multi-port serial boards
3114 0 = /dev/ttyEQ0 First serial port on first Equinox SST board
3115 127 = /dev/ttyEQ127 Last serial port on first Equinox SST board
3116 128 = /dev/ttyEQ128 First serial port on second Equinox SST board
3117 ...
3118 1027 = /dev/ttyEQ1027 Last serial port on eighth Equinox SST board
3120 256 block Resident Flash Disk Flash Translation Layer
3121 0 = /dev/rfda First RFD FTL layer
3122 16 = /dev/rfdb Second RFD FTL layer
3123 ...
3124 240 = /dev/rfdp 16th RFD FTL layer
3126 257 char Phoenix Technologies Cryptographic Services Driver
3127 0 = /dev/ptlsec Crypto Services Driver
3129 257 block SSFDC Flash Translation Layer filesystem
3130 0 = /dev/ssfdca First SSFDC layer
3131 8 = /dev/ssfdcb Second SSFDC layer
3132 16 = /dev/ssfdcc Third SSFDC layer
3133 24 = /dev/ssfdcd 4th SSFDC layer
3134 32 = /dev/ssfdce 5th SSFDC layer
3135 40 = /dev/ssfdcf 6th SSFDC layer
3136 48 = /dev/ssfdcg 7th SSFDC layer
3137 56 = /dev/ssfdch 8th SSFDC layer
3139 258 block ROM/Flash read-only translation layer
3140 0 = /dev/blockrom0 First ROM card's translation layer interface
3141 1 = /dev/blockrom1 Second ROM card's translation layer interface
3142 ...
3144 259 block Block Extended Major
3145 Used dynamically to hold additional partition minor
3146 numbers and allow large numbers of partitions per device
3148 259 char FPGA configuration interfaces
3149 0 = /dev/icap0 First Xilinx internal configuration
3150 1 = /dev/icap1 Second Xilinx internal configuration
3152 260 char OSD (Object-based-device) SCSI Device
3153 0 = /dev/osd0 First OSD Device
3154 1 = /dev/osd1 Second OSD Device
3155 ...
3156 255 = /dev/osd255 256th OSD Device
3158 **** ADDITIONAL /dev DIRECTORY ENTRIES
3160 This section details additional entries that should or may exist in
3161 the /dev directory. It is preferred that symbolic links use the same
3162 form (absolute or relative) as is indicated here. Links are
3163 classified as "hard" or "symbolic" depending on the preferred type of
3164 link; if possible, the indicated type of link should be used.
3167 Compulsory links
3169 These links should exist on all systems:
3171 /dev/fd /proc/self/fd symbolic File descriptors
3172 /dev/stdin fd/0 symbolic stdin file descriptor
3173 /dev/stdout fd/1 symbolic stdout file descriptor
3174 /dev/stderr fd/2 symbolic stderr file descriptor
3175 /dev/nfsd socksys symbolic Required by iBCS-2
3176 /dev/X0R null symbolic Required by iBCS-2
3178 Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
3180 Recommended links
3182 It is recommended that these links exist on all systems:
3184 /dev/core /proc/kcore symbolic Backward compatibility
3185 /dev/ramdisk ram0 symbolic Backward compatibility
3186 /dev/ftape qft0 symbolic Backward compatibility
3187 /dev/bttv0 video0 symbolic Backward compatibility
3188 /dev/radio radio0 symbolic Backward compatibility
3189 /dev/i2o* /dev/i2o/* symbolic Backward compatibility
3190 /dev/scd? sr? hard Alternate SCSI CD-ROM name
3192 Locally defined links
3194 The following links may be established locally to conform to the
3195 configuration of the system. This is merely a tabulation of existing
3196 practice, and does not constitute a recommendation. However, if they
3197 exist, they should have the following uses.
3199 /dev/mouse mouse port symbolic Current mouse device
3200 /dev/tape tape device symbolic Current tape device
3201 /dev/cdrom CD-ROM device symbolic Current CD-ROM device
3202 /dev/cdwriter CD-writer symbolic Current CD-writer device
3203 /dev/scanner scanner symbolic Current scanner device
3204 /dev/modem modem port symbolic Current dialout device
3205 /dev/root root device symbolic Current root filesystem
3206 /dev/swap swap device symbolic Current swap device
3208 /dev/modem should not be used for a modem which supports dialin as
3209 well as dialout, as it tends to cause lock file problems. If it
3210 exists, /dev/modem should point to the appropriate primary TTY device
3211 (the use of the alternate callout devices is deprecated).
3213 For SCSI devices, /dev/tape and /dev/cdrom should point to the
3214 ``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
3215 /dev/cdwriter and /dev/scanner should point to the appropriate generic
3216 SCSI devices (/dev/sg*).
3218 /dev/mouse may point to a primary serial TTY device, a hardware mouse
3219 device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
3221 Sockets and pipes
3223 Non-transient sockets and named pipes may exist in /dev. Common entries are:
3225 /dev/printer socket lpd local socket
3226 /dev/log socket syslog local socket
3227 /dev/gpmdata socket gpm mouse multiplexer
3229 Mount points
3231 The following names are reserved for mounting special filesystems
3232 under /dev. These special filesystems provide kernel interfaces that
3233 cannot be provided with standard device nodes.
3235 /dev/pts devpts PTY slave filesystem
3236 /dev/shm tmpfs POSIX shared memory maintenance access
3238 **** TERMINAL DEVICES
3240 Terminal, or TTY devices are a special class of character devices. A
3241 terminal device is any device that could act as a controlling terminal
3242 for a session; this includes virtual consoles, serial ports, and
3243 pseudoterminals (PTYs).
3245 All terminal devices share a common set of capabilities known as line
3246 disciplines; these include the common terminal line discipline as well
3247 as SLIP and PPP modes.
3249 All terminal devices are named similarly; this section explains the
3250 naming and use of the various types of TTYs. Note that the naming
3251 conventions include several historical warts; some of these are
3252 Linux-specific, some were inherited from other systems, and some
3253 reflect Linux outgrowing a borrowed convention.
3255 A hash mark (#) in a device name is used here to indicate a decimal
3256 number without leading zeroes.
3258 Virtual consoles and the console device
3260 Virtual consoles are full-screen terminal displays on the system video
3261 monitor. Virtual consoles are named /dev/tty#, with numbering
3262 starting at /dev/tty1; /dev/tty0 is the current virtual console.
3263 /dev/tty0 is the device that should be used to access the system video
3264 card on those architectures for which the frame buffer devices
3265 (/dev/fb*) are not applicable. Do not use /dev/console
3266 for this purpose.
3268 The console device, /dev/console, is the device to which system
3269 messages should be sent, and on which logins should be permitted in
3270 single-user mode. Starting with Linux 2.1.71, /dev/console is managed
3271 by the kernel; for previous versions it should be a symbolic link to
3272 either /dev/tty0, a specific virtual console such as /dev/tty1, or to
3273 a serial port primary (tty*, not cu*) device, depending on the
3274 configuration of the system.
3276 Serial ports
3278 Serial ports are RS-232 serial ports and any device which simulates
3279 one, either in hardware (such as internal modems) or in software (such
3280 as the ISDN driver.) Under Linux, each serial ports has two device
3281 names, the primary or callin device and the alternate or callout one.
3282 Each kind of device is indicated by a different letter. For any
3283 letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
3284 respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
3285 correspond to /dev/cua# and /dev/cub#. In the future, it should be
3286 expected that multiple letters will be used; all letters will be upper
3287 case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
3288 "cu" device (e.g. /dev/cudp#).
3290 The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
3292 The alternate devices provide for kernel-based exclusion and somewhat
3293 different defaults than the primary devices. Their main purpose is to
3294 allow the use of serial ports with programs with no inherent or broken
3295 support for serial ports. Their use is deprecated, and they may be
3296 removed from a future version of Linux.
3298 Arbitration of serial ports is provided by the use of lock files with
3299 the names /var/lock/LCK..ttyX#. The contents of the lock file should
3300 be the PID of the locking process as an ASCII number.
3302 It is common practice to install links such as /dev/modem
3303 which point to serial ports. In order to ensure proper locking in the
3304 presence of these links, it is recommended that software chase
3305 symlinks and lock all possible names; additionally, it is recommended
3306 that a lock file be installed with the corresponding alternate
3307 device. In order to avoid deadlocks, it is recommended that the locks
3308 are acquired in the following order, and released in the reverse:
3310 1. The symbolic link name, if any (/var/lock/LCK..modem)
3311 2. The "tty" name (/var/lock/LCK..ttyS2)
3312 3. The alternate device name (/var/lock/LCK..cua2)
3314 In the case of nested symbolic links, the lock files should be
3315 installed in the order the symlinks are resolved.
3317 Under no circumstances should an application hold a lock while waiting
3318 for another to be released. In addition, applications which attempt
3319 to create lock files for the corresponding alternate device names
3320 should take into account the possibility of being used on a non-serial
3321 port TTY, for which no alternate device would exist.
3323 Pseudoterminals (PTYs)
3325 Pseudoterminals, or PTYs, are used to create login sessions or provide
3326 other capabilities requiring a TTY line discipline (including SLIP or
3327 PPP capability) to arbitrary data-generation processes. Each PTY has
3328 a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
3329 /dev/tty[p-za-e][0-9a-f]. The kernel arbitrates the use of PTYs by
3330 allowing each master side to be opened only once.
3332 Once the master side has been opened, the corresponding slave device
3333 can be used in the same manner as any TTY device. The master and
3334 slave devices are connected by the kernel, generating the equivalent
3335 of a bidirectional pipe with TTY capabilities.
3337 Recent versions of the Linux kernels and GNU libc contain support for
3338 the System V/Unix98 naming scheme for PTYs, which assigns a common
3339 device, /dev/ptmx, to all the masters (opening it will automatically
3340 give you a previously unassigned PTY) and a subdirectory, /dev/pts,
3341 for the slaves; the slaves are named with decimal integers (/dev/pts/#
3342 in our notation). This removes the problem of exhausting the
3343 namespace and enables the kernel to automatically create the device
3344 nodes for the slaves on demand using the "devpts" filesystem.