Triple boot - Ubuntu Feisty (7.04) Dapper (6.06) and Windows XP (P4)

[Eric Dunbar]

On 26/03/07, Derek Broughton <news at pointerstop.ca> wrote:
> Eric Dunbar wrote:
>
> > On 25/03/07, Eric Dunbar <eric.dunbar at gmail.com> wrote:
> >> On 24/03/07, ac <"aec$news"@candt.waitrose.com> wrote:
> >> > Eric Dunbar wrote:
> >> > > Hello all:
> >> > >
> >> > > I've "lost" my "main" Ubuntu 6.06 (Dapper) install from the Grub boot
> >> > > menu. I have two HDs, one for Windows XP and one for Ubuntu.
> >> > >
> >> > > My Ubuntu 6.06 was set up with a /boot partition. My Ubuntu 7.04 was
> >> > > not (just /).
> >> > >
> >> > If I understand correctly, your original grub boot information is
> >> > still basically in the (now unused) original /boot partition for
> >> > dapper 6.06.
> >> >
> >> > So in theory, if you can copy it out and use the relevant items in
> >> > your new grub file, (menu.1st) which I expect is in the /boot/grub  of
> >> > 7.04 partition, then you will be hopefully on your way.
>
> Yes - just one disclaimer: put it outside the "automagic" section, or it
> will get lost when you install a new kernel image (or run update-grub).

Done that.

> >> Question for everyone:
> >>
> >> Where does Ubuntu's installer (Feisty (7.04) and Dapper (6.06 LTS)
> >> place the grub binary by default?
>
> In /boot, under the --root-directory specified to grub-install (your
> current / by default).

Hmm. I'm wondering if I need to do something different since one my
installs (the 606 that I can't access the grub for directly) actually
has its own /boot partition (and, I'm redirecting to that partition).
See below for my comment re: "chain loading"

> > Is it possible (I presume it is but I haven't managed to get the right
> > syntax yet and it's bed time ;-) to...
> >
> > have the first grub "chain load" the second grub or the second grub's
> > menu.lst?
>
> Definitely, just the same way you chain load to a windows install.

What I've done is used "configfile" to have the first grub simply load
the menu.lst file from the Ubuntu 606 /boot partition. So, I can use
the "chain loader" to activate the Ubuntu 606 chain loader? Hmm. I
wonder how I can tell the grub binary to load from the /boot partition
using the first grub that loads (I understand that installing grub
into the mbr is a two step process -- into the mbr is installed the
first part (400 bytes) of the boot loader which in turn loads the rest
of grub from the relevant partition).

Eric.