Very Computer

Hi, experts,

I have one 2GB Harddisk attached to my Solaris2.5.1 powered Sparc20
station. This HD has crashed once. I've partitioned it and formated
it.
But if I make "fsck -F ufs /dev/rdsk/c0t2d0sx", I got the message
"** c0t2d0s3
BAD SUPER BLOCK: MAGIC NUMBER WRONG
USE AN ALTERNATE SUPER-BLOCK TO SUPPLY NEEDED INFORMATION;
eg. fsck [-F ufs] -o b=# [special ...]
where # is the alternate super block. SEE fsck_ufs(1M).
"
I've changed the super block number with the option "-o b". It dones't
work also.

Have anyone a tip for this trouble.

Thanks

Weiping Li

Quote:> Hi, experts,

> I have one 2GB Harddisk attached to my Solaris2.5.1 powered Sparc20
> station. This HD has crashed once. I've partitioned it and formated
> it.
> But if I make "fsck -F ufs /dev/rdsk/c0t2d0sx", I got the message
> "** c0t2d0s3
> BAD SUPER BLOCK: MAGIC NUMBER WRONG
> USE AN ALTERNATE SUPER-BLOCK TO SUPPLY NEEDED INFORMATION;
> eg. fsck [-F ufs] -o b=# [special ...]
> where # is the alternate super block. SEE fsck_ufs(1M).
> "
> I've changed the super block number with the option "-o b". It dones't
> work also.

> Have anyone a tip for this trouble.

> Thanks

> Weiping Li

newfs -N /dev/rdsk/c0t2d0s3

This will give you a list of superblocks. Pick one. Say it's 1024:

fsck -F ufs -o b=1024 /dev/rdsk/c0t2d0sx

This should use the alternate superblock 1024 to attempt to fsck.

Make sure you use the -N switch in the newfs or you will hose your filesystem!

Hope this helps.

--
Tom Ierna
Cox Target Media, Inc.
---
The views expressed in this electronic document are not necessarily
the views of my employer, Cox Target Media, Inc.

Hi

do a newfs -N and take another superblock.
Then use fsck -F ufs -o b=XXXXXX => your number.

Pierre