Re: Double checking grub-install -- revisited ??

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Hi Michael;

On Wed, 2008-07-02 at 20:10 +0200, Michael Schwendt wrote:
> On Wed, 02 Jul 2008 13:56:20 -0400, William Case wrote:
> 
> > On Wed, 2008-07-02 at 19:35 +0200, Michael Schwendt wrote:
> > > On Wed, 02 Jul 2008 12:50:31 -0400, William Case wrote:
> > > 
> > > > I checked and low and behold I found GRUB listed in the first block
> > > > (mbr ??) of both disks.  So I thought I should chase that down before I
> > > > filed an inappropriate bug report.
> > > 
> > > Then what happens if you overwrite sda's mbr with NTLDR?
> > > 
> > > To me it is still not clear what your boot sequence looks like.
> > > 
> > > You say this is a dual-boot machine. Unless you prefer ntldr, you
> > > would store grub in sda. However, you say you store it in sdb.
> > > So, how exactly do you boot? Do you really chainload sdb from sda?
> > > 
> > Sorry Michael, I was trying to avoid re-telling a long tale of woe.
> > 
> > Here it is;
> 
> A long tale, but the details are missing.
> 
> To reinstall grub, you run "grub-install /dev/sda", right?

Yes that was the intent and that was what I used on the second attempt.
I might have mis-typed "grub-install /dev/sdb" the first time by
mistake.


> And what do /boot/grub/grub.conf and /boot/grub/device.map contain?

/boot/grub/grub.conf is as it should be:

#boot=/dev/sda
default=0
timeout=5
splashimage=(hd1,4)/grub/splash.xpm.gz
## hiddenmenu
title Fedora (2.6.25.6-55.fc9.x86_64)
	root (hd1,4)
	kernel /vmlinuz-2.6.25.6-55.fc9.x86_64 ro
root=UUID=884ffe2a-42ff-4835-bf57-b80bc45c3baa rhgb quiet
	initrd /initrd-2.6.25.6-55.fc9.x86_64.img
title Fedora (2.6.25-14.fc9.x86_64)
	root (hd1,4)
	kernel /vmlinuz-2.6.25-14.fc9.x86_64 ro
root=UUID=884ffe2a-42ff-4835-bf57-b80bc45c3baa rhgb quiet
	initrd /initrd-2.6.25-14.fc9.x86_64.img
title WindowsXP sp3
	rootnoverify (hd0,0)
	chainloader +1

and /boot/grub/device.map is:

# this device map was generated by anaconda
(hd0)     /dev/sda
(hd1)     /dev/sdb

> 
> > and everything seemed fine.  The intent was to install grub on /dev/sda
> > dual booting to sdb /boot. (BIOS loads in the natural hd0, hd1 order.)
> 
> Still, one question remains. With grub in the mbr of sda, how do
> you boot from sdb? Do you point grub.conf to your /boot partition?
Yes.

> Or perhaps you do some unusual chain-loading to the mbr of sdb?

Perhaps -- inadvertently.  That is what I am trying to ascertain and solve.
-- 
Regards Bill;
Fedora 9, Gnome 2.22.2
Evo.2.22.2, Emacs 22.2.1

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