Public bug reported:

Did a clean install of Natty on a new 120G SSD. No dual boot, no custom
partitions -- I let the installer partition it as it wants. The system
installed and worked fine until the last grub update, at which point it
became unbootable ("invalid arch independent ELF magic" + rescue shell).
grub-install complains, "This GPT partition label has no BIOS Boot
Partition; embedding won't be possible!"

After unsuccessfully trying to fix the bootloader, I reinstalled the OS
from scratch, again with no custom partitions. Again, the freshly
installed system boots fine, but after the first automatic upgrade
becomes unbootable.

Attaching the output of boot_info_script.sh.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: grub-pc 1.99~rc1-13ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
Uname: Linux 2.6.38-10-generic x86_64
Architecture: amd64
Date: Thu Jul 21 22:26:56 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: grub2
UpgradeStatus: Upgraded to natty on 2011-07-14 (8 days ago)

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug natty running-unity

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https://bugs.launchpad.net/bugs/814412

Title:
  Grub update renders system unbootable

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