grub error

[zeneknath]

Hello friends

every now & then when i restart my PC i get this error

error : hd0, msdos6 out of disk

grub rescue>_

of-course i know how to recover using supergrub2 Disk but i get this error always !

What could be the problem?

[devils casper]

Boot up from LiveCD and post the output of sudo fdisk -l command here.

[zeneknath]

Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xff45ff45

Device Boot Start End Blocks Id System
/dev/sda1 * 1 12162 97691233+ 7 HPFS/NTFS
/dev/sda2 12163 26170 112519260 7 HPFS/NTFS
/dev/sda3 26171 38914 102360065 5 Extended
/dev/sda5 26171 27143 7813120 82 Linux swap / Solaris
/dev/sda6 27143 34051 55484416 83 Linux
/dev/sda7 34051 38914 39060480 83 Linux

[devils casper]

Partition table looks good to me. There isn't any overlapping sector. Which version of Ubuntu are you using?

[zeneknath]

hi
thanks for the reply

iam using Ubuntu 10.10 - the Maverick Meerkat for my Desktop PC

also just wanted to know, is this ubuntu good for Samsung laptops. i have not tried it but i am little doubtful that it would give some problems with laptops, coz i use it for business purpose...and i do not want to get any grub erros when i switch on the laptop u know..

thanks

[devils casper]

Ubuntu LTS (Long Term Support) is good for business purpose. Latest version of LTS is 10.04. Debian and CentOS are good options too.
What is the configuration of your Samsung Laptop?

Regarding GRUB Error, Ubuntu 10.10 uses GRUB2 and it is one of the best boot loader, better that it's predecessor, GRUB Legacy.

Let's re-install GRUB. Boot up from Ubuntu LiveCD, open Terminal and execute this :

sudo mount /dev/sda6 /mnt
sudo grub-install --root-directory=/mnt /dev/sda
sudo umount /mnt

Reboot machine and check if GRUB throws error again.