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Old 12-17-2011, 08:42 PM   #1
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Help "error: unknown Filesystem" when I restarted my computer and deleted linux?

I have a computer with linux and windows vista installed on it.

I made a fatal error of deleting the partition pertaining to linux using a program from windows, but it seems that Linux itself didnt delete itself now I get the error and a sort of command line with command line that has "grub rescue>" what has happened?, how can I solve this! and get my windows back!! PLZ tell me I can
Old 12-17-2011, 09:41 PM   #2
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Your Linux boot loader (grub) is still there. Easiest fix is probably to have grub load Windows instead... try typing `chainloader +1` or some such at that prompt. That should get you back into Windows.

What happens is that when you install grub (or lilo) it replaces the Windows boot loader with Linux's boot loader. If you don't back it up first, it's gone.

I'm not aware of any Windows utilities that will reinstall the Windows boot loader. I'm not saying they don't exist, just that I don't know about them.
Old 12-18-2011, 02:08 AM   #3
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You might be able to boot the Windows installation CD or DVD and do a Rescue; that might re-install the windows boot loader, replacing GRUB.

Do you know if it is GRUB or GRUB2 that is installed? I do not recall seeing a "grub rescue" prompt from GRUB ... ?
Old 12-19-2011, 09:08 AM   #4
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The MBR contains only grub stage 1, the rest of grub (stage 2) is in the partition which you nuked, from windows. If you're going back to windows then your best course of action is to boot from the windows installation CD and restore the boot loader. In instructions on how to do this can be found online at numerous sites - the 'buntu forums also has numerous guides, howtos and threads on this subject...
Old 12-19-2011, 09:37 AM   #5
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the tool you are looking for is fixmbr which can be accessed from windows recovery console.


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