If you are not sure what your boot-device is, run format to list the disks in the system.
Code:
# format
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c1t0d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@1f,700000/scsi@2/sd@0,0
1. c1t1d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@1f,700000/scsi@2/sd@1,0
Specify disk (enter its number):
Hit control-D to exit. Based on the above output, we'll assume c1t0d0 is our boot-device.
Perform a sanity check on slice 0 and verfiy the ufs type:
Code:
# fstyp /dev/rdsk/c1t0d0s0
ufs
Mount the filesystem read-only:
Code:
# mount -o ro /dev/dsk/c1t0d0s0 /a
Verify it is indeed the boot disk by looking at the contents of /a
Code:
# ls -l /a
total 12228
lrwxrwxrwx 1 root root 9 Oct 19 2004 bin -> ./usr/bin
drwxr-xr-x 3 root nobody 512 Mar 23 14:35 cdrom
drwxr-xr-x 14 root sys 4096 Mar 23 15:05 dev
drwxr-xr-x 6 root sys 512 Nov 2 19:30 devices
drwxr-xr-x 59 root sys 4096 Apr 21 20:02 etc
drwxr-xr-x 2 root sys 512 Oct 19 2004 export
dr-xr-xr-x 1 root root 1 Apr 6 17:38 home
drwxr-xr-x 10 root sys 512 Oct 19 2004 kernel
lrwxrwxrwx 1 root root 9 Oct 19 2004 lib -> ./usr/lib
drwx------ 2 root root 8192 Oct 19 2004 lost+found
drwxr-xr-x 2 root sys 512 Oct 19 2004 mnt
...
...
[output truncated]
If your output looks like this, you can assume it is your boot-device.
Next: Inspect your vfstab
Code:
# cat /a/etc/vfstab
Look for the line that has a single '/' in the third column.
It looks like the following -
/dev/dsk/c1t0d0s0 /dev/rdsk/c1t0d0s0 / ufs 1 no -
Then you can go ahead and unmount the filesystem again, and run fsck to ensure the filesystem is in a clean state:
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02-27-2012
