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Possible Duplicate:
Grub rescue - error: unknown filesystem

I have had bad experiences with 12.04 on my laptop, too many things just don't work so am wiping it and replacing with Windows 8 release preview to get it running again. Anyway, I installed normally, deleted partitions and formatted and installed Windows fine, but now there is an error coming up when it boots:

error: unknown filesystem
grub rescue>

I've tried repairing from Windows 8 disk, doing FixMbr and FixBoot but that hasn't worked, and neither has reinstalling.

Any ideas how to get rid of this?

Zanna
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Shane O'Connor
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1 Answers1

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You’ll need to get your Windows 7 or Windows Vista retail disc or download the free recovery media from NeoSmart.net

Note: If you don’t have a retail disc with your computer, and instead you had to make a recovery media with your PC, don’t worry – you can download a Windows 7/Vista recovery disc that allows you to do the same thing with a retail disc – except reinstall Windows of course: see http://neosmart.net/blog/2009/windows-7-system-repair-discs/ for Windows 7 and http://neosmart.net/blog/2008/windows-vista-recovery-disc-download/ for Windows Vista. It’s in ISO format that you can easily burn to a disc.

Put the disc in, then as it comes up to the installation section (for retail discs), click “Repair my computer” then go and select your Windows installation, and from there select Command Prompt. For the recovery media discs you downloaded from NeoSmart – we’re not sure what the steps are, but it’s probably similar.

Then you need to type:

Note: execute one command at a time

bootrec.exe /FixBoot

bootrec.exe /FixMbr

It takes less than a second. Reboot and it’ll boot into Windows automatically. Then go to Start menu, right click Computer and select Manage. Go to Disk Management from here, and delete the partitions related to Ubuntu. Once you’ve done this, extend the volume size of your Windows partition to take the remaining free space. To delete/extend volume size of a partition, you right click.

Source: http://blog.eukhost.com/webhosting/howto-remove-grub-loader-and-restore-windows-7-and-vista-bootloader/

Eliah Kagan
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godismyjudge95
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