Re: FC4 Install GRUB Load Error

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>On 8/13/05, Mostafa Z. Afgani <mostafa.afgani@xxxxxxxxxxxxxxxxxx> wrote:
>> Chris Kirk wrote:
>> 
>> > I did what you said and now when I turn on the PC it says
>> > GRUB Loading stage2...
>> >
>> > I ran the cmd
>> > install (hd0,0)/grub/stage1 (hd0) (hd0,0)/grub/stage2 p (hd0,0)/grub/grub.conf
>> >
>> > I then checked the grub.conf file to make sure it is all correct, and
>> > then rebooted and it still hangs on the GRUB Loading stage2...
>> >
>> > Any ideas?
>> 
>> I believe I came across a problem similar to yours a while back. It was
>> a problem with SuSE - it refused to boot from the HDD but booted fine
>> with the Boot CD. Eventually, it turned out that the boot partition was
>> not marked as active. So you might want to look into that. Try (as root)
>> 
>> #fdisk -l
>> 
>> and see if the Boot column has a '*' for /dev/hda1. If not, you can run
>> 
>> #fdisk /dev/hda
>> 
>> and then type 'a' at the fdisk prompt to toggle the bootable flag. Once
>> done, you need to save the changes to the partition table and exit. Type
>> 'm' at the fdisk prompt for help.
>
>After I did the install cmd that you talked about a few lines messages
>ago I never ran the setup (hd0,0) cmd so I decided to try it...
>
>Heres what I got:
>
>grub> setup (hd0,0)
> Checking if "/boot/grub/stage1" exists... no
> Checking if "/grub/stage1" exists... yes
> Checking if "/grub/stage2" exists... yes
> Checking if "/grub/e2fs_stage1_5" exists... yes
> Running "embed /grub/e2fs_stage1_5 (hd0,0)"... failed (this is not fatal)
> Running "embed /grub/e2fs_stage1_5 (hd0,0)"... failed (this is not fatal)
> Running "install /grub/stage1 (hd0,0) /grub/stage2 p /grub/grub.conf "... succ
>eeded
>Done.
>
>I am not sure if the failed stuff has anything to do with why its not
>booting up but maybe it does, just an idea... I don't really know this
>stuff too well as you can see...
>

Can I join in here?
I think the problem is that you are trying to get grub to write
boot stuff onto a disk that isnt the disk from which you are
currently booted. The only way I've ever managed to do this is
by using a device map.

Assuming that the disk you want to make bootable is /dev/hda,
make a device map file containing the line:

(hd0)   /dev/hda

This file will have to be on a mounted filesystem which can be
accessed from your rescue kernel, so this may present problems,
but you could create it on a ramdisk perhaps.

Then start grub and tell it to use that device map:

#grub --device-map=pathToYourDeviceMap

Then within grub:

grub> root (hd0,0)
grub> setup (hd0)
grub> quit

Good luck,
Cheers,
Terry.


>Thanks so much for your help so far!
>
>-Chris
>  
>> 
>> HTH
>> -M
>> 
>> 
>> >
>> > -Chris
>> 
>> 
>> 
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