installed ubuntu messed up win7 boot setup

Asked by Sarah Hoffman

I installed Ubuntu 11.10 on another hard drive hooked up to desktop, and Ubuntu made it so i had to boot from second HD instead of first like always my other has Windows 7 pro and when i boot from first disk i get this error message:

error: no such device: 6df8afcb-632d-4ea5-b015-4fabe343e5c3
grub rescue>

I have a 1T drive that has win7 on and then a 320gb that i was trying to install Ubuntu on so when I find my power cord to my laptop i can just put it back w/ it on it. Anyone know of a way to fix it so it will boot on first drive and get rid of error.

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Ubuntu grub2 Edit question
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Alessandro Menti (elgaton) said :
#1

The error message appears because GRUB (the boot loader responsible for finding and booting OSs) is not capable of detecting external USB hard drives. Therefore, it can not find some files required for booting (normally stored on the drive you install Ubuntu on) and stops.

To repair it, follow these steps.
1) Boot your computer from a Windows 7 system repair disk (see <http://windows.microsoft.com/en-US/windows7/Create-a-system-repair-disc>) or an original Windows 7 disk. When asked, press a key to boot from the CD and wait for the rescue environment to start.
2) If Windows Setup asks you for your language and input settings, choose them and click Next.
3) Click on the "Restore your computer" link at the bottom.
If no such link appears, it is possible that you are using a custom recovery disk (the ones that are usually bundled with brand-name PCs). In this case, DO NOT PROCEED and ask someone with a Windows 7 PC to create a system repair disk for you.
4) The recovery environment should scan your computer for Windows installations. Choose the "Windows 7" line from the list and click Next.
5) Click on "Command Prompt", type the following command and press Enter:
bootsect /nt60 SYS
This will restore the Windows 7 loader and allow you to boot into Windows again.
6) Close the Command Prompt window.
7) Click on "Reboot" to reboot the computer.

Let me know if that worked - if yes, I may help you booting the Ubuntu installation from the external drive.

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