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Edit: Welp, I re-made the live USB and now it works fine. Thanks for the replies! Another computing lesson learned the hard way.

I was messing around with my new dual-boot (win7 and the latest ubuntu, 12.04 I think?), and I deleted some partitions that I shouldn't have.

When I boot up the machine, I get:

error: no such partition.
grub rescue> _

I know that I could probably fix this by booting from the live USB. But I can't boot from the live USB either! On startup, I can get "boot from drive" options by pressing F12. (This is how I installed Ubuntu in the first place.) But when I select the USB drive, I get this error:

error: no such device: [long string of letters and numbers].
grub rescue> _

I've searched around for a fix but most threads addressing the first problem suggest booting from live drive. And I can't do that!

Any help much appreciated.

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You might need to get access to another computer and remake the Live USB. Be careful with deleting partition next time. –  mikewhatever Jun 6 '12 at 17:00
    
Is booting from CD an option? –  Mitch Jun 6 '12 at 17:32

1 Answer 1

This is probably a problem where you messed up your Grub. Or, at least, this is the same thing I got when I messed up my grub. Specifically, when I attempted to install BURG. That's my experience with the first part of your problem with the "error: no such partition".

The second part of your problem, happened, I don't know when/why, to me as well. If I remember correctly, booting from Flash Drive did not work for me either, but booting from CD Image did. I would try that. Either way, I got through both of the problems. For the second part of your problem, I reinstalled Ubuntu completely and that fixed everything, but I feel as though you might just be able to reinstall Grub or something to fix both of your problems.

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