[Bug 686076] Re: Grub fails to recognise Ubuntu 10.10 on a separate hard disc. Windows 7 is recognised OK

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

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

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Title:
  Grub fails to recognise Ubuntu 10.10 on a separate hard disc. Windows
  7 is recognised OK

Status in “grub2” package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: grub2

  I have three hard drives. One has Windows7 Professional - rarely used - the second has Ubuntu 10.10 and the third is for messing about with. Each operating system uses the whole disc.
  I changed the BIOS to boot from the Messing about disc and installed Natty alpha 1 with no problem. It works well (although lots of essential bits seem to be missing from Unity - I am using the "Classic Desktop") but Grub shows only the Natty installation and Windows 7 but not Ubuntu 10.10.
  OS-prober does not show the other installation of Ubuntu either and running sudo update-grub does not help. 
  Changing the boot disc to the Ubuntu 10.10 disc and running update-grub from there produces a menu for all three OSs on booting from that disc but I can not cure the problem in booting from the Natty disc.
  Reinstalling Grub2 did not help.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: grub2 1.99~20101126-1ubuntu3
  ProcVersionSignature: Ubuntu 2.6.37-7.19-generic-pae 2.6.37-rc3
  Uname: Linux 2.6.37-7-generic-pae i686
  NonfreeKernelModules: nvidia
  Architecture: i386
  Date: Mon Dec  6 16:53:48 2010
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20101202)
  ProcEnviron:
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub2

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