[Bug 852579] Re: Grub does not access /boot/grub under fakeraid

[Liny]

I find this workaround works for me.

Reinstall GRUB with

sudo grub-install --module="part_msdos" --root-directory=(your_mount)
(your_dev_file)

It's able to reboot now.

To make it easier for later kernel updates, just put part_msdos into
grub-install line "modules="

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https://bugs.launchpad.net/bugs/852579

Title:
  Grub does not access /boot/grub under fakeraid

Status in “grub2” package in Ubuntu:
  Confirmed

Bug description:
  After the last update of grub-pc under oneiric beta, I could not reboot and fell under grub rescue mode. 
  The only accessible disc under grub rescue 'ls' was (hd0), claimed to be of 'unknown filesystem'. A reboot under a natty
  rescue disc shows that all disk partitions are fine and SATA raid partitions can be mounted. After a chroot, 
  update-grub did not help. addind raid and mdraid09 in the PRELOAD modules did not either.

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