Crash on GRUB

Dakkar9999 · n00b Joined: 02 Jul 2005 Posts: 7

Hi,

Maybe i missed it, if so, sorry.

I was doing the install from stage 1 and all the way up until the GRUB config step 9 i believe... Anyway, GRUB crashed badly and I had to do a reset on my system. Now, if I load with the install cd, it seems like my GRUB file does not exist anymore... I'm not sure, did I loose part of my setup? Where should I restart the installation from, and how? (I hope not from the beginning... :cry:

)

Thank You!

P.S. I'd like to use this machine for video editing... anybody has any good experience? (I have an AMD64)

nixnut · Posted: Sat Jul 02, 2005 6:48 pm Post subject:

You just boot the cd and chroot again. Then you can pick up the install where you left off, with installing grub that is.
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MickKi · Veteran Joined: 08 Feb 2004 Posts: 1173

You need to retrace your steps in mounting your partitions before chrooting. If you forget to mount /boot things won't go as expected!
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Dakkar9999 · n00b Joined: 02 Jul 2005 Posts: 7

Thank You!

I was able to continue my "experiment" with GRUB... I realized that the error message I was getting is that GRUB was looking for a floppy drive which I don't have on this computer...

So now I can log in and play around in the GRUB.conf file... although I still didn't get to boot properly... Anyway, here are the command lines I have been using to remount my installation. Could you please verify that I'm not missing anything important? Thanks!

swapon /dev/sda2 (I'm running from the second drive considered RAID by the system... not too sure)
mount /dev/sda1 /mnt/gentoo/boot
mount -t proc none /mnt/gentoo/proc
chroot /mnt/gentoo /bin/bash
env-update (??)
source /etc/profile (??)

(??)= don't think it's really needed.

MickKi · Veteran Joined: 08 Feb 2004 Posts: 1173

Hi Dakkar9999,

Not sure how RAID behaves but to get back into a normal set up your should add the following (in bold):

nixnut · Posted: Mon Jul 04, 2005 1:37 pm Post subject:

Dakkar9999 · n00b Joined: 02 Jul 2005 Posts: 7

Yeah I did try... but it still scanned forever (giving the fd0 sector 0 error) and after a while it would get over it. I did solve it by changing the .map file (can't remember the name right now...

Just to be clear...

env-update && source /etc/profile... what does the "&&" refer to? or is this a litteral line of command?

Thanks!

frenkel · Veteran Joined: 13 May 2003 Posts: 1034 Location: .nl

MickKi · Veteran Joined: 08 Feb 2004 Posts: 1173

Dakkar9999 · n00b Joined: 02 Jul 2005 Posts: 7

Is there anyway of having GRUB automatically configured... I'm pretty lost... actually I wiped my HD... It seemed it did not liked being on a SATA setup. I seem to have read that they can be pretty fussy.

I think I'll give it another try but from a second IDE HD (should be easier...maybe...)

MickKi · Veteran Joined: 08 Feb 2004 Posts: 1173

Grub's not that difficult as long as you remember to start counting drives and partitions from zero and that both hda and sda are seen as hd0 (in other words Grub will run what ever your BIOS passes on to it: ATA, or SATA, or SCSI).

Other points of confusion are building the correct drivers in your kernel (not as modules) for your motherboard's chipset and SATA drive.

It is extremely rare to need to wipe your drive and start again - unless your machine was compromised by a cracker. In most occasions troubleshooting and fixing the problem will teach you more.
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Mick