[Bug 825145] Re: GRUB and software raid issue

Andrew Cranwell 825145 at bugs.launchpad.net
Mon Oct 31 02:44:48 UTC 2011


If you are booting in EFI mode, grub is not installed in the MBR but in
the EFI system partition, and registered into the EFI boot order with
efibootmgr - I've mainly be trying to get this working with 11.10
Desktop using the graphical installed (Ubiquity). A simple partition
setup seems to work but I haven't tried a server or alternate desktop
install yet.

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https://bugs.launchpad.net/bugs/825145

Title:
  GRUB and software raid issue

Status in “grub2” package in Ubuntu:
  New

Bug description:
  Release:        11.04
  After installation of 11.04 ( server or alternate CD ) MBR has no GRUB. Chroot method did not help., 
  root at ubuntu:/# sudo grub-install /dev/sda
  Installation finished. No error reported.
  but MBR has no boot after.
  I found only one way how to fix:
  1) Boot from LiveCd
  2) apt-get install -y grub-pc
  ubuntu at ubuntu:~$ sudo chroot /mnt
  root at ubuntu:/# apt-get install -y grub-pc
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  The following package was automatically installed and is no longer required:
    efibootmgr
  Use 'apt-get autoremove' to remove them.
  The following extra packages will be installed:
    grub-gfxpayload-lists
  Suggested packages:
    desktop-base
  The following packages will be REMOVED:
    grub-efi grub-efi-amd64
  The following NEW packages will be installed:
    grub-gfxpayload-lists grub-pc
  0 upgraded, 2 newly installed, 2 to remove and 76 not upgraded.
  Need to get 942 kB of archives.
  .....

  
  ...................
  ubuntu at ubuntu:~$ sudo lvchange -a y /dev/dbs16/root
  ubuntu at ubuntu:~$ sudo mount /dev/dbs16/root /mnt
  ubuntu at ubuntu:~$ sudo mount -B /dev /mnt/dev
  ubuntu at ubuntu:~$ sudo mount -B /dev/pts /mnt/dev/pts
  ubuntu at ubuntu:~$ sudo mount -B /proc /mnt/proc
  ubuntu at ubuntu:~$ sudo mount -B /sys /mnt/sys
  ubuntu at ubuntu:~$ sudo chroot /mnt
  root at ubuntu:/# sudo update-grub
  Generating grub.cfg ...
  Found linux image: /boot/vmlinuz-2.6.38-8-server
  Found initrd image: /boot/initrd.img-2.6.38-8-server
  Found linux image: /boot/vmlinuz-2.6.38-8-generic
  Found initrd image: /boot/initrd.img-2.6.38-8-generic
  Found memtest86+ image: /boot/memtest86+.bin
  done
  root at ubuntu:/# sudo grub-install /dev/sda
  Installation finished. No error reported.
  root at ubuntu:/# sudo grub-install /dev/sdb
  Installation finished. No error reported.
  .......
  3) sudo grub-install /dev/sda
  and I managed boot Ubuntu.
  Seems problem is in EFI.
  Full store of this bug is here
  http://ubuntuforums.org/showthread.php?t=1813136

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: grub (not installed)
  ProcVersionSignature: Ubuntu 2.6.38-8.42-server 2.6.38.2
  Uname: Linux 2.6.38-8-server x86_64
  Architecture: amd64
  Date: Fri Aug 12 13:34:05 2011
  InstallationMedia: Ubuntu-Server 11.04 "Natty Narwhal" - Release amd64 (20110426)
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub
  UpgradeStatus: No upgrade log present (probably fresh install)

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