[Bug 972250] Re: regression from 4k_sectors.patch: "non-sector-aligned data is found in the core file"

[Colin Watson]

On Wed, Apr 04, 2012 at 02:35:55PM -0000, caViator wrote:
> I installed the corrected version. There is no critical errors, grub
> starts correctly. However, during upgrades following warnings occurred:
[...]
> /usr/sbin/grub-setup: warn: This GPT partition label has no BIOS Boot Partition; embedding won't be possible!.
> /usr/sbin/grub-setup: warn: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged.

Those warnings are not new, and are not errors.  They aren't evidence of
any problem related to this bug.  There is some technical background
here:

  http://www.gnu.org/software/grub/manual/grub.html#BIOS-installation

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https://bugs.launchpad.net/bugs/972250

Title:
  regression from 4k_sectors.patch: "non-sector-aligned data is found in
  the core file"

Status in “grub2” package in Ubuntu:
  Fix Released

Bug description:
  On a system installed with 11.10 and upgraded to 12.04 last week,
  today grub fails to apt-get upgrade with this error in
  /var/log/apt/term.log:

  /usr/sbin/grub-setup: warn: This GPT partition label has no BIOS Boot Partition; embedding won't be possible!.
  /usr/sbin/grub-setup: warn: Embedding is not possible.  GRUB can only be installed in this setup by using blocklists.  However, blocklists are UNRELIABLE and their use is discouraged..
  /usr/sbin/grub-setup: error: non-sector-aligned data is found in the core file.

  The system has luks+lvm as installed by 11.10 alternative installation
  cd, and indeed seems to have GPT but no BIOS partition (system is
  running BIOS on Asus F1A75V-PRO motherboard).

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