fedora boot problem (grub?)

[akonstam at trinity.edu]

On Wed, Oct 05, 2005 at 09:54:14PM -0800, gary wrote:
> 
> 
> 
> alex wrote:
> > though my bios recognized my scsi disks, my Fedora install needed me to load 
> > drivers manually otherwise the scsi disks were not found.  After that, the 
> > install completes without further problems.  I asked that grub be used and 
> > installed on the mbr.
> > 
> > After reboot I get "Operating System not found".
> > 
> > Using linux rescue (again with noprobe so I can load the driver), I tried 
> > rewriting to the boot sector and although grub claims success, the results 
> > are the same - can't boot.  I've tried copying stage 1&2 to a floppy to make 
> > it do the boot but I get a grub prompt after stage 2 is loaded.
> > 
> > The driver I needed during install is listed in modprobe.conf (aic7xxx) and I 
> > have tried re-creating initrd in various configurations (--preload=aic7xxx, 
> > --omit-raid-modules, etc) all with the same result - can't boot
> > 
> I've often got that (operating system not found) error booting trying to
> boot one hard drive when the bios is set to boot another. check bios.
> 
> Is grub on the scsi disks or hda ?
> 
> gary
I did not catch this the first time. If you have scsi and hdx disks I
seem to remember that the hda is booted from before the scsi by the
BIOS unless you change the order explicitly. How I ma not sure.
That would explain why it can't find your operating system if it is on
the scsi disk,
-- 
-------------------------------------------
Aaron Konstam
Computer Science
Trinity University
telephone: (210)-999-7484