root(7M)root(7M)NAME
root, rroot, usr, rusr, swap, rswap - partition names
DESCRIPTION
root, rroot, usr, rusr, swap, and rswap are the device special files
providing access to important partitions on the root disk drive of a
system. These links are made by the MAKEDEV(1m) script, and map to fixed
partitions, even if not used that way by local conventions. Therefore it
is best not to change these links, if you intend to use different
partition layouts, but rather to use the full device name (/dev/dsk/dks*)
instead, particular in fstab(4). The names beginning with r are the raw
(character) device access; the others are the block device access, which
uses the kernel buffer system.
The standard system drive partition allocation shipped by Silicon
Graphics has root on partition 0 and swap on partition 1. Partition 7 is
the entire usable portion of the disk (excluding the volume header) and
is normally used for option drives, rather than the system drive.
Partition 8 is the volume header (see vh(7M), prtvtoc(1M), and
dvhtool(1M)). Partition 10 (vol) is the entire drive.
The standard system with SCSI drives usually has /dev/root linked to
/dev/dsk/dks0d1s0, /dev/swap linked to /dev/dsk/dks0d1s1, and (if / and
/usr are separate filesystems, a usrroot partitioning), /dev/usr linked
to /dev/dsk/dks0d1s6.
FILES
/dev/dsk/dks*
/dev/rdsk/dks*
/dev/root
/dev/usr
/dev/swap
/dev/rvh
SEE ALSOMAKEDEV(1M), dvhtool(1M), fx(1M), prtvtoc(1M), fstab(4), dksc(7M),
vh(7M).
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