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LINUX-L  2007

LINUX-L 2007

Subject:

Re: Grub errors :(

From:

Eldo Varghese <[log in to unmask]>

Reply-To:

Platform Independent Linux List! <[log in to unmask]>

Date:

Sat, 7 Apr 2007 01:26:24 -0400

Content-Type:

text/plain

Parts/Attachments:

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text/plain (32 lines)

Mark Oden wrote:
> I have been trying to troubleshoot some GRUB issues I've been having.  
> Sometimes I get errors like "GRUB: hard disk not found" or "GRUB: Error 
> 15".  I have since loaded up knoppix, ran install-grub a few times, but 
> haven't been able to determine the proper syntax for my root partition.  
> I currently have root (hd0,0) set, but after Grub loads and selects the 
> kernel to boot I get "Error 15: File not found".  Is there a command to 
> have grub detect my root partition? (i.e. if it would return (hd0,1) or 
> (hd3,2)) I think that's the biggest problem I'm having, I don't know 
> what the root partition should be! (I've tried several combinations of 
> hd0, but I have 5 disks and am not sure of all the combinations).
> 
> Some things I do know, after mounting /dev/hda1 (which is the disk that 
> has /boot) in knoppix, I chroot to that drive and run grub-install, I 
> get all my disks back with something similar to:
> 
> (hd0) /dev/hda
> ....
> 
> but the updated menu.lst file doesn't do any good when I reboot.
> 
> Any tidbits of helpfulness?
> 
> Thanks,
> 
> ~Mark Oden
> 
easy method of finding out is tab autocompletion, just press e when you 
get the error message, and at the prompt do (hd and then tab to find out 
what options you have and then using the guessing game try to figure out 
what path should go to the kernel/init img. gl
- Eldo

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