[Bug 960092] Re: Latest update renders system unbootable "error: no such partition"

[Colin Watson]

OK, so I'm afraid your GRUB installation was simply misconfigured.  It
was set up to upgrade the boot loader on /dev/sda every time you
upgraded, but according to your comment on IRC you want it on /dev/sdb.
The effect of this was that you had an old partial copy of GRUB on
/dev/sdb, which eventually broke due to otherwise-innocuous changes (the
ABI between a GRUB core image and GRUB modules is not fixed).

You should run 'sudo dpkg-reconfigure grub-pc' and make sure the disk
you want to boot from is selected; I would in general recommend
selecting all the non-removable disks in your system.

** Changed in: grub2 (Ubuntu)
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/960092

Title:
  Latest update renders system unbootable "error: no such partition"

Status in “grub2” package in Ubuntu:
  Invalid

Bug description:
  Just did my daily 12.04 updates and ended up with an unbootable
  system:-

  error: no such partition.
  error: no such partition.
  error: no such partition.

  Press any key to continue...

  I had to chroot into the install to reinstall grub and the kernel to
  get it back to a bootable state.

  See attached photos.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: grub (not installed)
  ProcVersionSignature: Ubuntu 3.2.0-19.30-generic 3.2.11
  Uname: Linux 3.2.0-19-generic x86_64
  ApportVersion: 1.94.1-0ubuntu2
  Architecture: amd64
  Date: Tue Mar 20 11:00:34 2012
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120102)
  SourcePackage: grub
  UpgradeStatus: No upgrade log present (probably fresh install)

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