grub error 22. Bad partition table? [solved]

[Paul Howarth]

John DeDourek wrote:
> This would agree with my investigations.  In my case, I was working
> with an IBM T42 and attempting to make the machine dual bootable,
> including leaving the IBM diagnostic partition bootable using
> Fedora Core 2.  (I do know about the BIOS/IDE geometry issue and
> used the appropriate workarounds for that.)
> 
> My first attempt was to use Partition Magic to reduce the size of
> the Windows XP partition, install Linux partitions in the free space
> created, install grub in the linux boot partition and make the
> linux partition active.
> 
> This did not work: two possible hypotheses.  I had something
> configured wrong in grub.conf.  OR.  Either the BIOS or grub
> didn't like the fact that grub and/or its stage1.5 were beyond
> the 2 GIG boundary.
> 
> I finally gave up, and installed grub in the MBR.  Have a
> successful dual boot machine, but can not currently get the
> IBM diagnostic partition to boot.

Try adding these lines to your grub.conf, assuming that your diagnostic 
partition is hda1:

title IBM Diagnostic Tools
         rootnoverify (hd0,0)
         chainloader +1

Paul.