curious corruption 2-byte shift of all data

Paul Raines raines at
Mon Dec 22 14:58:18 UTC 2008

Yes, I tried.  No luck.

On Sun, 21 Dec 2008, Christian Kujau wrote:

> On Wed, 17 Dec 2008, Paul Raines wrote:
>> [root at shadowfax ~]# e2fsck -f -n /dev/loop7
>> e2fsck 1.39 (29-May-2006)
>> Group descriptors look bad... trying backup blocks...
>> e2fsck: Bad magic number in super-block while trying to open /dev/loop7
>> 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>
> Did you try one the alternatae superblocks? (mkfs.ext3 -n might help)
> Last time I myself had to use this it did not work. So I'm really curious
> if e2fsck -b actually works when this message appears.
> Christian.

Paul Raines                email: raines at
MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging
149 (2301) 13th Street     Charlestown, MA 02129	    USA

More information about the Ext3-users mailing list