Re: Boot problems (still)

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On Tue, 2007-02-06 at 22:59 -0500, Jim Cornette wrote:
> zephod@xxxxxxxxxx wrote:
> > I reported this problem some time ago but I still cannot boot my FC6 
> > disk. I have been poking around the GRUB source and I now have a 
> > better understanding of what GRUB does but I don't understand this 
> > problem.
> > 
> > I have 2 disks, one is a SATA disk that has Windows XP on it. The 
> > other disk is an IDE that has my FC6 on it. When I try to boot to the 
> > FC6 disk, the machine just reboots over and over again. I then boot 
> > from the rescue disk and look at the partitions using fdisk. 
> > Everything looks normal. The Windows stuff is on /dev/sda and the FC6 
> > stuff is on /dev/hdk. /boot/grub/device.map contains:
> > 
> > (hd0)  /dev/sda
> > (hd1)  /dev/hdk
> > 
> > If I enter GRUB in interactive mode and do
> > 
> > # geometry (hd0,0)
> > 
> > I get the output I expect but when I do
> > 
> > # geometry (hd1,0)
> > 
> > GRUB tells me that there is no such disk. The reason GRUB won't boot 
> > is that is fails the root (hd1,0) command in the grub.conf file.
> > 
> > I even re-installed GRUB
> > 
> > # grub-install /dev/hdk
> > 
> > with no problems but when I go back inro GRUB it still tells me there 
> > is no hd1.
> > 
> > Can anyone give me somewhere else to look for clues? If GRUB looks at 
> > device.map to figure that hd1 means /dev/hdk and grub-install is OK 
> > installing on /dev/hdk, why doesn't GRUB recognize the 2nd disk?
> > 
> > Steve
> > 
> 
> The problem with rebooting without a rational cause happened to me 
> booting from a xen kernel. Are you booting from a xen enabled kernel?
> Chances are that this is not your problem but just in case it is your 
> problem.
> 
> Regarding the no such disk problem. I had problems on two different Dell 
> computers which the secondary drive was disabled in BIOS. Fedora itself 
> recognized the disks but grub did not because of the BIOS setting. Are 
> your BIOS settings set to show all disks?
> 
> Regarding Grub interactive. I had to use it myself today for the first 
> time. It is highly cryptic but not too hard once you get through the 
> vague documentation.
> 
> CAUTION: (I don't know what the heck I'm doing in the grub shell yet 
> this is a question only)
> What would happen if you entered
> root (hd1,0)
> followed by
> setup (hd0)
> 
> Basically, boot is the first partition on the second hard drive and grub 
> is booted from MBR.
> 
> I had to do this on a computer which I moved boot from sdb2 to sdb1 
> changed fstab reference and /boot/grub/grub.conf references but did not 
> run grub-install before rebooting.
> 
> Why are you trying geoometry
> -- 
The above grub coammands shold work, and the boot block should be placed
on /dev/sda.
 =======================================================================
Everyone wants results, but no one is willing to do what it takes to get
them. -- Dirty Harry
=======================================================================
Aaron Konstam telephone: (210) 656-0355 e-mail: akonstam@xxxxxxxxxxxxx

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