8.04 -> 10.04 Grub Grub 2 and LVM

[Tom H]

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?

Is /boot lvm'd or mdadm'd? What is /boot's filesystem?

Is grub2 not installed or is it chainloaded by grub1?