16|beryllium:/ # e2fsck -p /dev/block/sde48
e2fsck: Bad magic number in super-block while trying to open /dev/block/sde48
/dev/block/sde48:
The superblock could not be read or does not describe a valid ext2/ext3/ext4
filesystem. If the device is valid and it really contains an ext2/ext3/ext4
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>
or
e2fsck -b 32768 <device>
8|beryllium:/