System Administration Guide
Appendix C, UNIX directories and special device files

The /dev directory

The /dev directory

The /dev directory contains special device files that control access to peripheral devices.

There are several subdirectories to the /dev directory. Each of these subdirectories holds special device files related to a certain type of device. For example, the /dev/dsk directory contains device files for floppy and hard disks. The operating system supports both XENIX and UNIX system device naming conventions. Where appropriate, the files in the /dev/dsk directories are linked to the device files that exist in /dev. You can access the same device through the file in /dev or the file for the same device in a subdirectory of /dev.

/dev/vdisk* devices are associated with the Virtual Disk Manager. 

Table C-1 Commonly-used /dev device nodes

 UNIX device      XENIX device      Name
 /dev/console     -                 system console
 /dev/rdsk/      /dev/r           raw devices
 /dev/dsk/0s0     /dev/hd00         entire disk on drive 0
 /dev/dsk/0s1     /dev/hd01         first disk partition on drive 0
 /dev/dsk/0s2     /dev/hd02         second disk partition on drive 0
 /dev/dsk/1s0     /dev/hd10         entire disk on drive 1
 /dev/dsk/1s1     /dev/hd11         first disk partition on drive 1
 /dev/dsk/1s2     /dev/hd12         second disk partition on drive 1
 /dev/vdisk0      -                 virtual disk configuration database
 /dev/vdisk1      -                 root filesystem mirror
 /dev/vdisk2      -                 swap area mirror
 /dev/dsk/f05d9   /dev/fd048ds9     360K floppy drive 0
 /dev/dsk/f05q    /dev/fd096ds9     720K floppy drive 0
 /dev/dsk/f05h    /dev/fd096ds15    1.2MB floppy drive 0
 /dev/dsk/f03h    /dev/fd0135ds18   1.44MB floppy drive 0
 /dev/lp          -                 lineprinter
 /dev/kmem        -                 kernel virtual memory
 /dev/mem         -                 physical memory
 /dev/null        -                 null device
 /dev/rmt0        /dev/rct0         default cartridge tape device
                 /dev/rft0         QIC-40 tape device
                 /dev/rctmini      minicartridge tape device
 /dev/root        -                 root file structure
 /dev/swap        -                 swap area
 /dev/ptypnn                       pseudo-tty (master)
 /dev/ttypnn                       pseudo-tty (slave)
 /dev/ttynn                        console multiscreen
 /dev/tty1a       -                 main serial line
 /dev/tty2a       -                 alternate serial line
 /dev/tty1A       -                 main serial line (modem control)
 /dev/tty2A       -                 alternate serial line (modem control)