Recovering vfstab

[ponetguy2]

Hello Everyone,

I've messed-up my entries in my vfstab file. /usr is unable to mount. However, I made a backup in /etc/vfstab.bak.

Any ideas on how I can recover. OK prompt was giving me an option to reinstall or boot -b and try to recover. I tried boot -b, but I was unable to access vfstab.bak.

Please help me.

 

[bfitzmai]

Most likely you will have to boot from cdrom... You can try boot -s, but I think you will run into the same type of problem. If you boot to cdrom do the following.

ok# boot cdrom -s
# mkdir mnt0
# mount /dev/dsk/c0t0d0s0 /tmp/root/mnt0
# cd mnt0/etc
# mv vfstab.bak vfstab
# cd /tmp/root
# umount /tmp/root/mnt0
# init 6

 

[kHz]

Instead of rebooting again you could try to remount the filesystems:

mount -o remount,rw /dev/dsk/c0t0d0s0 /
mount -o remount,rw /dev/dsk/c1t0d0s3 /var
...

Oops, but your in single-user mode.

 

[ponetguy2]

thank you for the advise. i reallye appreciate everyone's help. unfortunately, i really screwed-up this install and will need to rebuild the machine. my boss is cool about it, but i would really hate to drain his patience.

i really suck at SDS.

 

[marrow]

Reference SDS, if you've run a metaroot recently and are trying to put the system back again - your /etc/system may also be incorrect if so you may have to have the rootdev meta entry removed at end of the file.

rootdev:/pseudo/md@0:0,0,blk

 

[coffeysm]

If you can not mount the /usr partition you are pretty much SOL, and will have to boot the network or a cd-rom. THen mount up the root slice and change it there. Just do what bfitzs suggested.

 

[Annihilannic]

For future reference, I *think* you can use boot -a which will ask you where various system files are located, so you may have been able to specify /etc/vfstab.bak. I'm not 100% sure it asks for the location of vfstab though?

Annihilannic.

 

[ponetguy2]

hello annihilannic, i tried boot -a with this situation, but i was not prompted for the vfstab. however, i know exactly what you are talking about. i've used boot -a to recover a corrupt system file a couple of years ago, and it worked like a charm. maybe i had a different obp version this time.