[Bug 1069470] Re: second install of quantal not reached

[Phillip Susi]

It appears that you did not install grub to any of your MBRs when you
installed the new system in sdc2.  Which drive did you tell the
installer to put grub in, and did you get any errors?  You will need to
reinstall grub to the MBR of whichever disk your system boots from to
correct this.  You can do so by booting from the livecd, mounting sdc2,
chrooting into it, and running dpkg-reconfigure grub-pc and choosing the
correct drive from the menu:

sudo -s
mount /dev/sdc2 /mnt
mount --bind /sys /mnt/sys
mount --bind /dev /mnt/dev
mount --bind /proc /mnt/proc
chroot /mnt
dpkg-reconfigure grub-pc

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https://bugs.launchpad.net/bugs/1069470

Title:
  second install of quantal not reached

Status in “grub2” package in Ubuntu:
  Incomplete

Bug description:
  Two installations of Quantal, no specific /boot partition (/boot
  directory is part of private / disk).

  In trying to verify certain behaviour in a Quantal installation I
  installed a new Quantal in a different partition (scd1 as opposed to
  sdb1) and expected the MBR to use the grub in the last installation
  (since that is what I requested, install grub to the first disk). To
  my surprise the older installation is the only one reacheable. I'm not
  in a position to reach the latest installation.

  It could be that grub is listening to common names (e.g. 'Ubuntu' in
  stead of 'Ubuntu 12.04 on /dev/sd...')

  I've tried to run grub-install in the older installation, but that
  failed to detect the latest Quantal installation.

  My suspision is the MBR is not updated while installing a new version
  of Quantal. It still points to the old Quantal installation.

  The old Quantal installation does not point to the latest Quantal installation.
  The latest Quantal installation point to itself and also the older Quantal installation.

  (I'm searching for UUIDS in /boot/grub/grub.cfg in the old and new
  partitions).

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: grub2 (not installed)
  ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
  Uname: Linux 3.5.0-17-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.6.1-0ubuntu3
  Architecture: amd64
  Date: Sun Oct 21 19:10:17 2012
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121015.2)
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub2
  UpgradeStatus: No upgrade log present (probably fresh install)

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