F16>F17: F17 can't find root by uuid - which exists!

[sean darcy]

On 08/26/2012 04:45 PM, Heinz Diehl wrote:
> On 26.08.2012, sean darcy wrote:
>
>>> [liveuser at localhost ~]$ blkid /dev/sda2
>>> /dev/sda2: LABEL="root" UUID="89afb6ff-4fb2-4602-94b5-99dbf022b100" TYPE="ext4"
>
> I can't find something wrong in your grub.cfg. What do you see when
> you try to boot, are there any errors / is there any related output on
> the screen when it fails?
>
> Have you looked into device.map, if your devices are listed correct?
>
> If you want to boot from absolute device, write "root=/dev/sda2" into
> your grub.cfg.
>
> If this is not working either and nobody has a clue what's going on, I
> would try to reinstall grub2 via grub2-install, after booting from an
> external media. You can avoid chrooting by using the --root-device
> parameter. Mount your root-partition on /mnt:
>
>   grub2-install --root-directory=/mnt /dev/sda
>
> I'm not quite shure it is a problem with dracut, but without any
> further information it will be impossible to be more precise.
>

Trying to do grub2-install from the F17 Live CD. I think I need to mount 
both / and /boot. Then I'd use --boot-directory to point to /boot. But 
I'm puzzled about how to specify /root. --root-directory is now 
deprecated in favor of --efi-directory. But that's specific for UEFI, 
whatever that is.

sean