Corrupted Hard Drive

[Mickey]

Fedora 15 Hard drive. ext4

# e2fsck -b 8193 /dev/sdb
e2fsck 1.42.8 (20-Jun-2013)
e2fsck: Bad magic number in super-block while trying to open /dev/sdb

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>


What command should I use to overcome this ?
I'm using Fedora 20 to check the hard drive.