[Bug 1316068] Re: error: disk 'hd0,msdos5' not found

[Mathieu Trudel-Lapierre]

That indeed looks like bad disk order.

Mathieu, would you be open to trying to disconnect the other drives,
leaving just the "right" one in place and seeing if grub is happy then?
I would expect you'd only need to disconnect power to the other drives.

Following the same train of thought, is it possible additional drives
where added after xubuntu was installed? We should be able to either
generate a new device map to account for the unexpected behavior, or get
rid of an old stale one.

** Changed in: grub2 (Ubuntu)
       Status: New => Incomplete

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Title:
  error: disk 'hd0,msdos5' not found

Status in grub2 package in Ubuntu:
  Incomplete

Bug description:
  After upgrading the distribution, grub fails to boot any of the installed OSes.
  Whatever the option selected in the grub menu, I get the same error message: error: disk 'hd0,msdos5' not found.
  Unfortunately, hd0,msdos5 is the partition where the root of the Xubuntu system resides, and where the grub files (/boot) are.
  By the way, the grub menu is shown in text only, without the nice blue background it should show.
  Downgrading grub to version 2.00-19ubuntu2.1 make the system bootable again.
  I have updated the BIOS firmware, to make sure it does not solve the issue.
  A regression in  grub ?

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: grub2-common 2.02~beta2-9
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Mon May  5 11:53:03 2014
  InstallationDate: Installed on 2013-01-07 (482 days ago)
  InstallationMedia: Xubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.1)
  SourcePackage: grub2
  UpgradeStatus: Upgraded to trusty on 2014-04-26 (8 days ago)

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