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I just upgraded Ubuntu 12.04 to 12.10. I followed the upgrade instructions on Ubuntu's website, and followed all onscreen instructions. My problem is, when I select Ubuntu from the boot menu, it gives me a screen that says at the top:

"GRUB4DOS 0.4.5b 2011-11-27, Mem: 639K/1010M/0M, End: 3554C0 [ Minimal BASH-like line editing is supported. For the first wors, TAB lists possible command completions. Anywhere else TAB lists the possible completions of a device/filename.] grub>"

How do I go about booting Ubuntu from this screen?

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I had the same problem and the same error message. I solved the problem using easyBCD on Windows 7 following the instructions in this post: How can I add an entry for Ubuntu to the Windows 7 boot menu?

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Can you please summarize the instructions in your link? – Kyle Macey Nov 2 '12 at 0:07

You may need to attempt the upgrade again. I created a handy step-by-step screenshot guide that lays out all the steps as precisely as possible. Check it out and let me know if it helps!

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