Что не так с моей fstab?

пытается получить второй диск для монтирования в папку / media / media:

/dev/sda /media/media ext4 auto,exec,rw,user,async 0 0

, но он не работает, заставляя меня пропустить.

Используя 12.04.

Вот полный файл fstab:

# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    nodev,noexec,nosuid 0       0
# / was on /dev/sdb1 during installation
UUID=72e34f04-a84f-41b5-931c-8e1a08b0315e /               ext4    errors=remount-ro 0       1
# swap was on /dev/sdb5 during installation
UUID=d2a7845a-01cc-4a55-93a6-f86b694804de none            swap    sw              0       0
/dev/sda /media/media ext4 auto,exec,rw,user,async 0 0  

Вот моя ошибка:

fsck.ext4: Bad magic number in super-block while trying to open /dev/sda
/dev/sda: 
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&gt;

mountall: fsck /media/media [708] terminated with status 8
mountall: Unrecoverable fsck error: /media/media
/dev/sdb1: clean, 197231/7331840 files, 1544679/29305088 blocks
Ignoring errors with /media/media at user request
mount: wrong fs type, bad option, bad superblock on /dev/sda,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

mountall: mount /media/media [808] terminated with status 32
mountall: Filesystem could not be mounted: /media/media
Skipping /media/media at user request