Re-installing GRUB on FC3

[Pete Toscano]

Dan,

Thanks for looking into this.

I thought about moving my hard drives from ide2 and ide3 to ide0 and 
ide1, but I hesitate for two reasons:

1.  The normal FC3 install went fine with the drives in their current 
positions and it ran some GRUB install command, so why can't I just run 
that again?

2.  ide0 and ide1 are slower IDE interfaces, but ide2 and ide3 are 
ata100.  Granted, it probably doesn't make much difference, but I'd like 
to keep the potential there.

That said, if I get frustrated enough, I might just disconnect my 
optical drives for a minute, reconnect the hard drives to ide0 and ide1, 
and try re-installing again.  I'm just not sure how well GRUB would 
react after I move them back to ide2 and ide3.  (Probably not well.)

Thanks,
pete

Daniel B. Thurman wrote:
> This is my $0.02 so take it for what it is.
> 
> I had the same problem with multi-boot configuration and
> thanks to others for leading me the way.  Here is what
> I found and it fixed my problems.
> 
> First -- the basics seems to be:
> 
> Your hardware configuration should be:
> 
> IDE0 - Primary/master  - hard disk #1 = /dev/hda (boot drive - required)
> IDE0 - Secondary/slave - hard disk #2 = /dev/hdb
> IDE1 - Primary/master  - CDROM/DVD #1 = /dev/hdc (cdrom - required if
> used)
> IDE1 - Secondary/slave - ?            = /dev/hdd
> 
> I have tried before all sorts of other combinations and it wreaked
> havoc with the fedora installation, at least this is what it did
> to me.  Note that for windows OS, it does not matter as to where
> the boot hard disk is installed as long as it is a primary/master
> either on IDE0 or IDE1 and the cdrom/dvd can be anywhere else but
> for fedora -- apparently it DOES matter.  I note that if the cdrom
> for fedora was on /dev/hdd -- fedora complains with a interrupt problem
> and spits a message to the message file very often so when I put
> the cdrom on /dev/hdc -- it "shut up"!
> 
> Once you get your hardware configuration right and your devices
> are "fedora approved", you can reinstall grub with
> 
> 1) Insert your fedora boot cd
> 2) Run 'linux rescue'
> 3) Do 'chroot /mnt/sysimage' stage when asked
> 4) grub-install /dev/hda  (NOT /dev/hdaX where X are paritions)
> 5) remove CDROM
> 6) type exit twice (it will reboot)
> 
> then grub should come up.
> 
> Hope this helps,
> Dan