8.04 -> 10.04 Grub Grub 2 and LVM

Tom H tomh0665 at gmail.com
Wed Jun 30 03:57:01 UTC 2010

On Tue, Jun 29, 2010 at 5:44 PM, Robert Steinmetz <rob at steinmetznet.com> wrote:
> On 6/29/2010 4:14 PM, Tom H wrote:
> On Tue, Jun 29, 2010 at 2:49 PM, Robert Steinmetz AIA
> <rob at steinmetznet.com> wrote:
>>> I have recently upgraded one of my machines from 8.04 LTS to 10.04 LTS and
>>> have been unable to boot it since.
>>> The root partition is on a RAID Array with LVM installed.
>>> I can boot using a Live CD and using the nodmraid option then load lvm2 and
>>> mdadm. I can then activate the arrays and restore the volume groups. The
>>> files appear intact but it appears that lvm is not being loaded during boot.
>>> I have also discovered that GRUB was not upgraded to GRUB2
>> At what point does your boot fail?
> GRUB starts and begins to load. it them fails to find the root file system
> and drops into a shell.

"drops into a shell" means that your initramfs cannot find /, can you
load mdadm and lvm and continue from there by running the scripts

>> Is /boot lvm'd or mdadm'd? What is /boot's filesystem?
> /boot is not lvm'd or mdadm it is a reiserfs
> / is both lvm'd and mdadm'd


>> Is grub2 not installed or is it chainloaded by grub1?
> I don't think grub2 is installed
> grub-install -v returns version 0.97


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