[Bug 960010] Re: [Precise] [Regression] Grub doesn't recognize other Linux distros anymore

[Swâmi Petaramesh]

Since I filed this bug I've noticed that :

- It's OK on my Son's machine who doesn't use LVM and has several Linux
distros and a Windows on bare partitions.

- That's broken on 3 machines of mine that uses (encrypted) LVM with
only distros /boot on a separate partition for each.

I see from decafbad's report above that the machine he reports uses LVM
as well... Would be interested in knowing if his machine "that is OK"
uses LVM as well...

So that might be a grub/LVM issue...

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Title:
  [Precise] [Regression] Grub doesn't recognize other Linux distros
  anymore

Status in “grub2” package in Ubuntu:
  Confirmed

Bug description:
  - Regression since latest grub2 updates on Precise Beta

  - Observed on 2 different machines.

  - Grub doesn't recognize the presence of other Linux distros on same
  machine anymore (it was working perfectly before) (There's a Mint
  /boot on /dev/sda6 here).

  - OTOH it identifies FreeBSD, which it didn't automagically do
  before...

  Grub now spits "no such disk" error that I had never seen before.

  Example:

  $ sudo update-grub
  [sudo] password......: 
  Generating grub.cfg ...
  Found linux image: /boot/vmlinuz-3.2.0-19-generic
  Found initrd image: /boot/initrd.img-3.2.0-19-generic
  Found linux image: /boot/vmlinuz-3.2.0-18-generic
  Found initrd image: /boot/initrd.img-3.2.0-18-generic
  Found memtest86+ image: /memtest86+.bin
  grub-probe : erreur : no such disk.
  grub-probe : erreur : no such disk.
  Found FreeBSD on /dev/sda1
  Found Windows Recovery Environment (loader) on /dev/sda3
  done

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: grub-pc 1.99-18ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-19.30-generic 3.2.11
  Uname: Linux 3.2.0-19-generic i686
  ApportVersion: 1.94.1-0ubuntu2
  Architecture: i386
  Date: Tue Mar 20 09:24:34 2012
  SourcePackage: grub2
  UpgradeStatus: Upgraded to precise on 2012-03-13 (7 days ago)

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