Grub Error 17 -> chybi /dev/sda -> nejde preinstalovat grub

[Jusuf]

diky vsem za rady, jo mel sem to blbe v tom fstabs, ale bylo v tom jeste neco protoze to porad neslo, vynecham ted ze jsem asi 50x vytvarel a rusil ruzny partitiony ze se me v prubehu restl bios a defaultne bylo vyply bootovani z sata atd...

nakonec jsem v gparted udelal kopiji te linuxove partitiony nekam na konec disku, na puvodni patition nainstaloval nove ubuntu, pak v gparted zase zkopiroval zpatky stare ubuntu. A uz to slo menit a reaguje to, takze z grubu me to normalne de nabootovat ale sekne se to hned u "Mounting root file system" co s tim?

root@ubuntu:~# fdisk -l

Disk /dev/sda: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1        3824    30716248+   7  HPFS/NTFS
/dev/sda2            3825        4780     7679070   83  Linux
/dev/sda3            4781        4844      514080   82  Linux swap / Solaris
/dev/sda4            4845       30401   205286602+   f  W95 Ext'd (LBA)
/dev/sda5            4845       17592   102398278+   7  HPFS/NTFS
/dev/sda6           17593       27782    81851143+   7  HPFS/NTFS
/dev/sda7           27783       28707     7430031   83  Linux
/dev/sda8           28708       30401    13607023+  83  Linux

root@ubuntu:/pes/etc# more fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
/dev/sda2       /               ext3    defaults,errors=remount-ro 0       1
/dev/sda1       /mnt/C          ntfs    defaults,nls=utf8,umask=000,gid=46 0       1
/dev/sda5       /mnt/D          ntfs    defaults,nls=utf8,umask=000,gid=46 0       1
/dev/sda6       /mnt/E          ntfs    defaults,nls=utf8,umask=000,gid=46 0       1
/dev/sda7       /backup         ext3    defaults        0       2
/dev/sda3       none            swap    sw              0       0
/dev/hda        /media/cdrom0   udf,iso9660 user,noauto     0       0

ja uz tam zadnou chybu nevidim... v cem je problem?