Re: help needing recovering bootloader after upgrade

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On Tue, 2012-01-24 at 12:07 -0600, Chris Caudle wrote:
> The bootloader was not installed properly during a F15->F16 upgrade, so
> I'm hoping someone on this list can point me in the correct direction to
> recover.
> 
> I had a F15 system which also has a Windows partition.
> The disks (actual logical units on a RAID controller) are like this:
> first: Windows partition
> second: linux partition
> third: Windows NTFS data partition
> fourth: Linux XFS data partition
> 
> The linux partition has multiple partitions, with a 100MB /boot partition,
> a separate /home partition, swap partition, and OS partition.
> 
> On the F15 installation, grub was the default bootloader, and chained to
> the Windows bootloader.
> 
> I upgraded from an F16 DVD, and at the end of the upgrade process anaconda
> had a message to the effect that the bootloader was not written properly
> and the system may not boot.  I don't remember if the wording was that the
> bootloader was not written properly, was not upgraded properly, or some
> slight variant of that.
> 
> I have booted the F16 DVD in rescue mode, and the system disk is mounted
> under /mnt/sysimage, everything seems to be OK there, so I think I just
> need to get the bootloader set up properly again.
> 
> Would F16 have been trying to install grub2, or would it have left grub
> legacy since this was an upgrade and not a fresh install?
> 
> Before I started the upgrade I printed a copy of fstab, so I have the UUID
> of the /boot partition.   I have the grub manual from gnu.org, should I be
> able to just follow the steps in the generic grub documentation to install
> grub using grub2-install?
> The only tricky part that I'm aware of is getting stage 1 on the Windows
> drive, and stage 1.5 and 2 (if they are still called that in grub2) onto
> the /boot partition.  Will grub2-install take UUID arguments, or will I
> have to give it the raw device names (e.g. c0d1p1 for
> controller/lun/partition number)?
> 
> I see after looking through the grub2 documentation that the name for the
> stages is now boot.img and core.img.  The documentation does not seem
> clear to me how you get boot.img onto the MBR and core.img onto a
> different drive.  Maybe the correct command line to specify that to
> grub2-install is all that I am missing at this point.
> 
> Anyone that can help?
> 
> thanks,
> Chris Caudle
> 
> 

How big is /boot? 

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