upgrade from ubuntu 12.04 to 12.10 failed, now loads "grub rescue"

Posted by Greg on Ask Ubuntu See other posts from Ask Ubuntu or by Greg
Published on 2012-12-14T21:40:40Z Indexed on 2012/12/14 23:22 UTC
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12.04

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12.10

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grubrescue

I attempted to upgrade from 12.04 to 12.10 last night. Installation seemed to go fine, and this morning I had a message like "restart now to complete installation". So I restart, get an initial "Loading Operating System ..." message, followed by "error: file not found. Then it kicks into "grub rescue>" mode.

Previously I have this running as a dual boot (window 7) and I just ran the upgrade to 12.10 via the update manager in ubuntu. Any ideas on what is going on here, or what the error means? I know my way around the command line, but this is above my pay grade. Thanks for any advice.

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