"Bad magic number"
Edwin Humphries
edwin at ironstone.com.au
Fri Apr 16 21:25:24 UTC 2004
G'day all,
We're just fitting a second HDD into our new Fedora server, and
getting error messages I don't know how to deal with.
The drive is near new, but we're not entirely sure of its provenance,
so we're being cautious. However, it fdsisked fine, and running
mke2fs -j /dev/hdb1 ran OK with no error messages.
But because of our cautions, I tried to check the drive for errors
before using it for any data: ran e2fsck -c /dev/hdb.
The result was an error messages as follows:
|Couldn't find ext2 superblock, trying backup blocks ...
|e2fsck: Bad magic number in super-block while trying to open
|/dev/hdb
|
|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>
Now I'm not sure what magic numbers or super-blocks are, and I have
no idea how to fix this. Can anyone shed some light on this?
Edwin Humphries,
Ironstone Technology Pty Ltd
edwin at ironstone.com.au
www.ironstone.com.au
Phone: 02 4233 2285
Fax: 02 4233 2299
Mobile: 0419 233 051
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