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Old 10-01-2011, 04:40 AM   #1
sandeepdice
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Registered: Oct 2011
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error: unknown filesystem Grub Rescue


Hi,

There are some threads with the same subject but instructions in those threads doesn't seem to solve my case. Please help.

I've Win XP & Ubuntu 10 on my notebook. I uninstalled Ubuntu10 using wubi and removed the 30GB Ubuntu partition using a Disk Management software (one similar to Partition Magic. I can't recall the name).

While doing this, I downloaded Ubuntu 11 using Wubi. I merged the cleared Ubuntu partition with existing windows partition. Ubuntu11 (Wubi) prompted to reboot to start installation. When I rebooted, it couldn't detect GRUB and entered grub rescue mode.

My notebook doesn't have a CD ROM. So I've no way to boot using Windows XP CD or Ubuntu CD.

In the "grub rescue" command, only "ls" works. "ls" returns (hd0), (hd0,7), (hd0,6), (hd0,5), (hd0,2) and (hd0,1)

Any clues?

Thanks,
Sandeep
 
Old 10-01-2011, 07:01 AM   #2
andrewthomas
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Registered: May 2010
Location: Chicago Metro
Distribution: Arch, Gentoo, Slackware
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What you really need is a Windows system rescue cd written to a USB stick.

It seems to me that grub was mistakenly written to the MBR.


I am not that familiar with wubi, but this may help:


Solution #2:

Quote:
If you do not have a Windows CD, or are unable to get hold of one, you can use an Ubuntu CD/USB to install a Windows-like bootloader.

From a terminal on the LiveCD/USB (Applications > Accessories > Terminal), run the following commands:

Code:
Code:
sudo apt-get install lilo
sudo lilo -M /dev/sda mbr
This assumes that sda is the Windows drive. If not, change this to reflect the actual drive e.g. sdb, sdc, etc.

Ignore any warnings and continue with the installation to the MBR. The main point is to get lilo installed and allow the user to boot Windows, and hopefully Ubuntu, again.
This is from the wubi megathread on ubuntuforums.org

http://ubuntuforums.org/showthread.php?t=1639198

It may be in your best interests to read through a bit of that thread for some tips.
 
1 members found this post helpful.
Old 10-10-2011, 10:38 PM   #3
sandeepdice
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Registered: Oct 2011
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Smile

Quote:
Originally Posted by andrewthomas View Post
What you really need is a Windows system rescue cd written to a USB stick.

It seems to me that grub was mistakenly written to the MBR.


I am not that familiar with wubi, but this may help:


Solution #2:



This is from the wubi megathread on ubuntuforums.org

http://ubuntuforums.org/showthread.php?t=1639198

It may be in your best interests to read through a bit of that thread for some tips.

[SOLVED]

The solution resolved my problem.

Thanks for your response.
 
Old 10-15-2011, 06:10 PM   #4
musakazhim
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Registered: Oct 2011
Posts: 1

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Quote:
Originally Posted by andrewthomas View Post
What you really need is a Windows system rescue cd written to a USB stick.

It seems to me that grub was mistakenly written to the MBR.


I am not that familiar with wubi, but this may help:


Solution #2:



This is from the wubi megathread on ubuntuforums.org


It may be in your best interests to read through a bit of that thread for some tips.
thanks, the solution #2 worked for me
 
  


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