Superblock.. make my system unstable.

Yo, i tried a install in an old computer and superblock cause gnome to have serious issues and partition are almost broken..
i don't understand what to do with them..
Gparted before partioning : http://i.imgur.com/8L35M0A.png
Gparted when partionnated : http://i.imgur.com/y5RODDU.png
I get space used ,, when i clearly have nothing ..
I tried
dd if=/dev/zero of=/dev/sda
Not deleting the superblocks..
So i did :
mke2fs -n /dev/sda
/dev/sda is entire device, not just one partition!
Proceed anyway? (y,n) y
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
61054976 inodes, 244190646 blocks
12209532 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=0
7453 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848
i did :
e2fsck -b 32768 /dev/sda
e2fsck 1.42.8 (20-Jun-2013)
e2fsck: Bad magic number in super-block while trying to open /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>
I wanna remove them from backing up in my partion, or repair them..
Edit : i think, i posted in a wrong section, 1000 sorry.
Last edited by localhostabc (2013-08-31 04:54:32)

i finaly found how to use e2fsck
I created a full ext4 partiition and run multiple command
e2fsck <SUPERBLOCK> /dev/sda1

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