adding my fdisk report :

ubuntu@ubuntu:/mnt/racine/boot/grub$ sudo fdisk -l

Disk /dev/hda: 60.0 GB, 60011642880 bytes
255 heads, 63 sectors/track, 7296 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/hda1               1         383     3076416   12  Compaq diagnostics
/dev/hda2             384        3828    27671962+   7  HPFS/NTFS
/dev/hda3   *        3829        5044     9767520   83  Linux
/dev/hda4            5045        7296    18089190   83  Linux