Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I recently installed 11.10 on a new partition on my Windows 7 PC, and it works perfectly. But when I want to boot Windows 7 from the grub boot menu, it just says unknown file system, grub rescue.

Windows recovery says there is nothing wrong with it, an I can access all the files through Ubuntu. The Ubuntu Disk Utility says that the Windows 7 partition file system is NOT clean.

How do I get my Windows 7 back?

share|improve this question

Reinstalling GRUB2 to the Master Boot Record using any of the methods detailed here usually solves this sort of problem.

share|improve this answer
I did that, and now for some reason nothing boots. Anyway, I did some more tinkering, and I think that it was Windows, and not grub, that was causing the problem. I think I'll just reinstall everything... – twinjum Nov 11 '11 at 11:06
If you decide you do want to keep troubleshooting this problem, then please indicate which of the methods you used, and any details about error messages you saw while using it. – Eliah Kagan Nov 11 '11 at 19:12

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.