Double checking grub-install -- revisited ??

[Michael Schwendt]

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

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