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

[sean darcy]

On 08/26/2012 05:55 PM, sean darcy wrote:
> 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
>

Used the net.iso disk to chroot into the install. Then tried 
grub2-install. That completed successfully. Then rebooted. Same problem.

Really odd.

Do I replace the uuid with /dev/sda2 everyplace it appears in grub.cfg?

sean