Duel boot ubuntu problem

[andy1983]

Hi,

I had win7 on my laptop. Before sometime I install Ubuntu 9.10 and it worked fine. Bur later that I resize the partition using third party software. Now when I restart the system it is giving me an error

GRUB Loading
error: unknown filesystem
grub rescue>

I am not able to access the harddrive. I am very new to ubuntu. I read the other article but I did not understand. Pls help

[lindsay7]

Try this first. Type in the terminal

"sudo update-grub" without the quotation marks

[andy1983]

do you want to say terminal mean the terminal window in ubuntu?

I typed the sudo update-grub at the start screen but it is giving error
Unknown command 'sudo'

[lindsay7]

Can you boot to the recovery setup or the command line from any options that you get.

Try booting from the live Ubuntu cd and type this in the terminal and post the results.

Sudo fdisk -l

That is a small letter L. This will tell us what is on your partitions.

[andy1983]

I really dont know how to do that but there is a option when laptop starts System recovery.

I tried that also but gives the same error. Pls tell me how to do it.

[lindsay7]

Ok, Do Not Mess with the System Recovery that you see. It is probably the Widows recovery option.

You need to have a Unbuntu install cd. and start you computer with it. Do no do an installation. Just use it to start Ubuntu. find the terminal under Applications/accessories and type in sudo fdisk -l and post the results. This will show what in on your computer and you can get help from there. I have to go off line now but will check tomorrow. Most likely someone else can help you tonight. You may just need to reset the grub menu and that first command I gave you may do that. or your repartition may have gone bad and your installation is messed up. The fdisk -l command will help show that. You may in the mean time want to download the Ubuntu alternet installation cd. It has a recovery option and you can use it to reinstall the grub menu if needed.

[andy1983]

Thanks for the reply tha there is a hope
but there is a problem. I don't have ubuntu CD but do have bootable pendrive. Will it work?

[andy1983]

Thanks for the reply that there is a hope

I insert ubuntu 8.10 CD and then use first option Try ubuntu without installation and after that I use sudo fdisk-l command in terminal. Below is the result I got

Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/tracks, 19457 cylinders
units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x31a431a3


Device Boot Start End blocks ID System
/dev /sda1 * 1 3917 31463271 7 HPFS/NTFS
/dev /sda2 3918 19456 124817017+ f W95 Ext'd (LBA)
/dev /sda5 3918 7282 27029331 7 HPFS/NTFS
/dev /sda6 8772 10368 12827871 83 Linux
/dev /sda7 10369 10444 610438+ 82 Linux swap / Solaris
/dev /sda8 10445 15666 41945683+ 7 HPFS/NTFS
/dev /sda9 15667 19456 30443143+ 7 HPFS/NTFS
/dev /sda10 7283 8702 11406118+ 83 Linux
/dev /sda11 8703 8771 554211 82 Linux swap / Solaris

I have attached the notepad also.

[Leppie]

please download meierfra's script to the desktop and run it:

$sudo bash ~/Desktop/boot_info_script*.sh

and post the generated RESULTS.txt

[andy1983]

Here is the result