[lug] Grub configuration

[Andy Jolley]

I have a scrounged PC with SCSI HD and CD, and am running out of space.  
I have scrounged up an 4gb IDE drive.
When I add the IDE drive, grub views the new drive as HD0 and my SCSI 
drive as HD1.  No real surprise there.

When I would boot I would get the grub prompt, and when I would type
root (hd1,0)
kernel /vmlinuz-2.4.18-19.7.x ro root=/dev/sda5
initrd /initrd-2.4.18-19.7.x.img
boot

The system would fire up correctly.

Now, thinking I was smart (I'm a newbie at mucking around with grub at 
this level by the way) I changed my grub.conf file to point to (hd1,0) 
instead of (hd0,0).  Well that didn't work.

So I tried:
install (hd1,0)/grub/stage1 (hd0,0) (hd1,0)/grub/stage2 p 
(hd1,0)/grub/grub.conf
And I got a partition doesnt exist.  (now I know, I don't need the 
partition number on the install parameter, but whoops)
So I checked the drive info with geometry and made a partion of type 
0x83 for the whole size of the drive, and then ran the install above again.

Now when I boot, it goes through some of the boot process, but now it 
hangs with GRUB at the bottom of the screen.  I'm  guessing I've futzed 
up the MBR on my IDE drive.
I was able to get everything back by changing my grub.conf to point to 
(hd0,0) and doing an install to (hd0,0) and (hd0) for everything.

So now 2 questions:
1) what's the easiest way to get the MBR on the IDE drive un-messed up?  
I suppose I could pop it into another machine as a slave and fix it there.
2) what are the steps I should take to install an IDE drive, thus making 
my current SCSI drive (hd1) without having to move my installation over 
to the IDE from the SCSI?

Thanks
Andy
majolley at earthlink.net