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From: Mick <michaelkintzios@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Re: Installing Gentoo: Grub, alternate GNU/Linux system on another partition
Date: Mon, 5 Dec 2011 23:23:41 +0000
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On Monday 05 Dec 2011 21:58:44 Grant Edwards wrote:
> On 2011-12-05, Michael Mol <mikemol@gmail.com> wrote:
> >> You can only have one primary bootloader, either grub from Gentoo or
> >> grub2 from Mint, it cannot be both. But it looks like that's what you
> >> do have. Seeing as you intend to drop Mint eventually, you must
> >> uninstall grub2 and all it's files from Mint.
> >=20
> > Not *exactly* true.
>=20
> It is for the usual definition of "primary bootloader" as the one that
> is loaded and run by the BIOS.
>=20
> > Grub can chainload any bootloader that's visible to BIOS. At minimum,
> > that means you could have grub on /dev/sda
>=20
> (primary bootloader)
>=20
> > chainload grub on /dev/sdb
>=20
> (secondary bootloader).
>=20
> > I'm uncertain if it means you could chainload a bootloader stored in
> > the first 512 bytes of /dev/sda8, but I suspect so.
>=20
> You're right, you can. Though to get grub2 to install on a partition
> like /dev/sda8 instead of in the MBR you have to use the --force
> option or you'll get some incomprehensable error message when you try
> to do the 'setup' command.
Last time I installed Ubuntu on a machine that had a different primary=20
OS/bootloader I chose for it to be installed on the Ubuntu partition and th=
ere=20
was not problem with it. It was GRUB2
Then I chainloaded it from the primary bootloader.
The OS can do the same, but this means that he can either:
a) Install Gentoo's GRUB to the MBR and chainload from Gentoo's grub.conf=20
Mint's /dev/sda8 boot loader (assuming that he has installed the Mint=20
bootloader to /dev/sda8 instead of the MBR); or
b) Install Gentoo's GRUB in Gentoo's partition, or some other partition (e.=
g.=20
a boot partition specific to Gentoo) and chainload this from Mint's GRUB2.
=2D-=20
Regards,
Mick
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