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[ubuntu] grub failure - alloc magic is broken

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http://ubuntuforums.org – Any ideas for getting around this stumbling block, anyone? I'm testing quantal, and running several other Ubuntu installs, some on the main HD (sda) and others on a USB external drive (sdb). Since the update to grub2I've been having increasing problems with grub, not accessing some installs, etc. The latest manifestation is that booting from Precise, on my main HD, I get the error message: Code: alloc magic is broken at 0xb5b4aeb0. Aborted. Press any key to exit. Of course, pressing any key returns the same message, indefinitely. There is no grub> prompt, no grub rescue> promp (Hardware)

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Submitted by linuxfan on 09/16/2012

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[ubuntu] alloc magic broken 35 weeks 6 days ago

Quote:

alloc magic is broken at 0x7ff79760

i just moved, and we've had a small power failure, now when booting it reboots several times before giving the above error... help?

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and the error comes up before i can get to the boot selection menu, and thus, the cd will not boot... :S

[SOLVED] Two Grubs- Confusing 19 weeks 2 days ago

I have both Precise and Quantal installed on separate partitions on same HDD.

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Let me be more clear.

Ive just saw a thread where the OP replaces Ubuntu on a second drive, and Ubiquity installs grub on the second drive as well. This obviously results in Ubuntu not booting, if the version of Ubuntu that they are replacing has a older grub version (even a few minor versions off).

Shouldn't Ubiquity be automatically selecting the main HDD (i.e.

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Hello...

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http://paste2.org/zOX5E7Bw

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