Re: Fedora 16 preupgrade with grub2 failure.

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I just did a preupgrade from F15 to F16 and fell into this trap, or
something similar.

>From a rescue disk boot (F12 is the latest I had lying around), I can
see both grub and grub2 directories in /boot.  The grub2 dir looks set
up, but when booting grub/grub.conf is accessed, and it points to the
preupgrade "kernel" which no longer exists.  I tried setting
grub/grub.conf so that at least the system would boot, but I can't
figure out how to set the "root=" option.  Using what's in grub2 does
not work, nor does any of many things I've tried (it's /dev/sda2, and
presumably VolGroup00-LogVol01, but nothing like that works).  So, I'm
dead in the water as well.

On Sun, Feb 26, 2012 at 12:18 PM, Michael D. Setzer II
<mikes@xxxxxxxxxxxxxxxx> wrote:
> I've don't a number of upgrades from Fedora 14 to 16 with no
> problems, but just had a very bad issue with grub2 not working.
>
> Preupgrade process seemed to go fine, then rebooted.
> Screen came up, but was in a very dark gray with slightly lighter
> gray letters that were not very readable, but it appeared to be
> processing fine, and let it run.
>
> After a while, it had a popup window that said something about a
> bootloader with only an OK button, which I was a guessing was
> that it was going to install the new bootloader, so pressed enter.
>
> Machine rebooted but showed the old grub 0.97 options, which
> only listed the upgrade kernel option and the link to run my g4l
> kernels. The preupgrade option didn't find files, but booting from
> the g4l kernel gave me access, and I could see a grub2 directory
> was there and so was the new kernels. I was eventually able to
> get the 0.97 grub.conf to load the fedora 16 kernel and initramfs
> by manually creating entry, but don't know why the grub2 upgrade
> would have failed, or what the best way to get the grub2 correctly
> installed?
>
> I have the previous 500GB disk with the Fedora 14 before the
> upgrade, so can go back to it if necessary. Had to duplicate the
> disk to a 1TB drive and increase the /boot since the system only
> had a 200MB /boot.
>
> Hoping there is a simple solution?
>
> +----------------------------------------------------------+
>  Michael D. Setzer II -  Computer Science Instructor
>  Guam Community College  Computer Center
>  mailto:mikes@xxxxxxxxxxxxxxxx
>  mailto:msetzerii@xxxxxxxxx
>  http://www.guam.net/home/mikes
>  Guam - Where America's Day Begins
>  G4L Disk Imaging Project maintainer
>  http://sourceforge.net/projects/g4l/
> +----------------------------------------------------------+
>
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