finding alternate superblock on ext2 part'n

finding alternate superblock on ext2 part'n

Post by Andrew Gra » Wed, 22 Nov 2000 10:29:07

Dear all,
    Had a * partition corruption that killed the superblock. When I run

e2fsck 1.15, 18-Jul-1999 for EXT2 FS 0.5b, 95/08/09
Group descriptors look bad... trying backup blocks...
/sbin/e2fsck: Bad magic number in super-block while trying to open /dev/sdc8

The superblock could not be read or does not describe a correct ext2
filesystem.  If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
    e2fsck -b 8193 <device>

Tried the address suggested but no go.
How can I find the address of the alternative superblock to fix this
The partition is over 2GB so the tool ext2ed doesnt work.

Andrew Gray