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

[Mathieu31]

The problem was still there after upgrading to 16.04LTS.
I fixed it by first reinstalling the windows MBR, then reinstalling grub2-2.02.
Strange but solved.

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

Status in grub2 package in Ubuntu:
  Expired

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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