May 18, 2011

Ubuntu 11.04 hd0 out of disk boot error

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When I boot up ubuntu, I see the following error.

hd0 out of disk.
Press any key to continue...

However, after I press the key to acknowledge, it boots normally. There do not seem to be any adverse effects other than extending my boot time by a couple minutes, but I would like to know what is going on.