Hi All,
Finally my problem got solved. Many many thanks to all those who
responded. The solution is to use alternate super-block number
and repair the SCSI hard disk. The first alternate super-block
number is always 32.
fsck -y -o b=32 /dev/rdsk/c0t0d0s0.
The list of alternate super-block can be obtained by
executing the following comnmand
newfs -Nv /dev/rdsk/c0t3d0s0.
Regards
R.Suresh Kumar
Adzman SK wrote:
> Hello,
>
> Chances that your superblock is corrupted. So you'll need to get
> the backup superblock number. So try "newfs -Nv /dev/rdsk/c0t2d0s0" and
> you'll get the list of superblocks. The "N" disable creation of new
> filesystem. e.g.:
>
> example# newfs -Nv /dev/rdsk/c0t0d0s6
> mkfs -F ufs -o N /dev/rdsk/c0t0d0s6 1112940 54 15 8192 1024 16 10 60
> 2048 t 0 -1 8 /dev/rdsk/c0t0d0s6: 1112940 sectors in
> 1374 cylinders of 15 tracks, 54 sectors 569.8MB in 86 cyl
> groups (16 c/g, 6.64MB/g, 3072 i/g) super-block backups
> (for fsck -b #) at:
> 32, 13056, 26080, 39104, 52128, 65152, 78176, 91200, 104224, ...
>
> Probably 32 is pretty much the first superblock for all disk. You
> can use the next one. Like in the example above 13056.
>
> Then issue the command "fsck -y -o b=13056 /dev/rdsk/c0t2d0s0"
> again. ^
> |
> |
> This number should be replaced
> with your own backup superblock
> number.
>
> Adzman SK
>
> On Thu, 29 Jul 1999, R.Suresh Kumar wrote:
>
> > Hi All,
> >
> > I have a serious problem with respect to SUN SCSI Hard Disk. When I try to
> > run
> > fsck -y /dev/rdsk/c0t2d0s0 it reports the following error
> >
> > BAD SUPER BLOCK: TRASHED VALUES IN SUPER BLOCK
> > USE AN ALTERNATE SUPER-BLOCK TO SUPPLY NEEDED INFORMATION
> >
> > Please anybody replay ASAP. This is very very important
> >
> > Regards
> > R.Suresh Kumar
> >
> >
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