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My computer cannot load Windows 8 using GRUB after the installation of Ubuntu 12.10. When I select Windows 8 (loader) (on /dev/sda1) it takes the user back to GRUB OS-selection screen. How to recover back?

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If you have repair disk of windows you can insert, boot and select startup repair.

and if you have windows installation disk, insert and boot it and then repair the windows.

Someone told that this can help.

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