Hi All.
I've just had a rather problematic upgrade to Fedora 16 on a test machine.
Now I can't boot it.
I'm getting a root filesystem not found problem. It tells me the only
available devices are sda1 and sda2 - so it's clearly not setting up lvm
at all.
I know how to fix this in the old grub,
Boot using the CD/DVD and at the linux prompt
linux rescue
then follow the prompts to mount the files system. Drop in to the shell
chroot /mnt/sysimage
mount -a
ls /boot
ensure it has mounted
grub2-mkconfig -o /boot/grub2/grub.cfg
grub2-install /dev/sda
Have a look at