[Bug 1061255] Re: GRUB recognizes defunct LDM headers

[YannUbuntu]

** Description changed:

  GRUB recognizes stale LDM headers left on the disk after reformatting
  without LDM.  This causes grub to complain either that embedding is not
  possible, and/or to incorrectly use the ldm partition module instead of
  msdos.
  
  - This bug affect GRUB2.00 (default bootloader of Ubuntu12.10).
  - This bug completely breaks access to any operating system, either when installing a fresh 12.10, or when upgrading from 12.04 to 12.10.
  
  ********************
- WORKAROUND1:
- see Comment #26 below (https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1061255)/comments/26
+ WORKAROUND1 (when GRUB appears, but the Windows entry fails and shows a "A disk Error Occurred" error):
+ see Comment #44 below ( https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1061255/comments/44 )
  
  WORKAROUND2:
+ see Comment #26 below ( https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1061255/comments/26 )
+ 
+ WORKAROUND3:
  Use Boot-Repair ( https://help.ubuntu.com/community/Boot-Repair ) from liveCD to replace GRUB2 by GRUB Legacy: run Boot-Repair --> Advanced options --> GRUB options tab --> tick "GRUB Legacy" --> Apply
  
- 
  ********************

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https://bugs.launchpad.net/bugs/1061255

Title:
  GRUB recognizes defunct LDM headers

Status in “grub2” package in Ubuntu:
  In Progress
Status in “grub2” source package in Quantal:
  New

Bug description:
  GRUB recognizes stale LDM headers left on the disk after reformatting
  without LDM.  This causes grub to complain either that embedding is
  not possible, and/or to incorrectly use the ldm partition module
  instead of msdos.

  - This bug affect GRUB2.00 (default bootloader of Ubuntu12.10).
  - This bug completely breaks access to any operating system, either when installing a fresh 12.10, or when upgrading from 12.04 to 12.10.

  ********************
  WORKAROUND1 (when GRUB appears, but the Windows entry fails and shows a "A disk Error Occurred" error):
  see Comment #44 below ( https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1061255/comments/44 )

  WORKAROUND2:
  see Comment #26 below ( https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1061255/comments/26 )

  WORKAROUND3:
  Use Boot-Repair ( https://help.ubuntu.com/community/Boot-Repair ) from liveCD to replace GRUB2 by GRUB Legacy: run Boot-Repair --> Advanced options --> GRUB options tab --> tick "GRUB Legacy" --> Apply

  ********************

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