confusion about pre upgrade and /boot partition

Sat May 30 19:06:45 UTC 2009

On Tue, May 26, 2009 at 18:17:56 -0700,
  Rick Stevens <ricks at nerd.com> wrote:
>
> You can have /boot as part of the root filesystem if you want, but
> you'll have to make sure the root filesystem is a type grub groks (and
> that's ext2 or ext3 only at this time).  It can't be on an LVM volume
> (as mine is) or be on something esoteric like a software RAID or XFS
> filesystem, since the kernel has to be running to access those.

Software RAID 1 is an exception, since it is usable in a read only mode
without knowing about RAID.