[Bug 1041446] [NEW] GRUB hangs if a disk is connected

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I have a Gigabyte G33M-DS2R (Core2Duo) system currently running 10.04.4.
I tried to boot a 12.04.1 (amd64 server) ISO and it hangs unless I
unplug the disk so the BIOS doesn't see it.

If I unplug the disk, then plug it while the kernel loads I can install
onto it but rebooting onto it hangs.

I see absolutely no debugging information though - the last message on
the screen is "Updating DMI Pool Data ...." which is from the BIOS.

I tried holding down shift as well as tapping escape while GRUB starts
but I didn't get given a menu.

Ctrl-alt-del does reset the PC so presume that it must happen very early
on.

** Affects: grub (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment precise
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GRUB hangs if a disk is connected
https://bugs.launchpad.net/bugs/1041446
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