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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?

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1 Answer

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

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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
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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

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