Gentoo Archives: gentoo-dev

From: Mike Gilbert <floppym@g.o>
To: Richard Yao <ryao@g.o>
Cc: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] grub:2 keywords
Date: Fri, 29 Jun 2012 21:05:26
Message-Id: CAJ0EP40qKphevjzti5kGOzn2cqGPLnGrXVsS33N+av4DEomS7A@mail.gmail.com
In Reply to: Re: [gentoo-dev] grub:2 keywords by Richard Yao
1 On Fri, Jun 29, 2012 at 4:56 PM, Richard Yao <ryao@g.o> wrote:
2 > On 06/29/2012 03:04 PM, Mike Gilbert wrote:
3 >> On Fri, Jun 29, 2012 at 3:00 PM, Rich Freeman <rich0@g.o> wrote:
4 >>> On Fri, Jun 29, 2012 at 2:51 PM, Richard Yao <ryao@g.o> wrote:
5 >>>> GRUB2 does away with the conventional stage files. It also wants a
6 >>>> special BIOS Boot Partition in order to function. That is where it
7 >>>> stores the equivalent of the stage2 bootcode. That is similar to
8 >>>> FreeBSD's bootloader.
9 >>>
10 >>> Now, that should make for a fun migration!  Fortunately I do have a
11 >>> separate boot already, and I guess I can be daring and overwrite it in
12 >>> place and trust in grub2 to still find the kernel elsewhere.
13 >>>
14 >>> Those without a separate boot and without any free space are likely to
15 >>> find this to be painful.  Resizing partitions isn't exactly
16 >>> risk-free...
17 >>>
18 >>> Rich
19 >>>
20 >>
21 >> I think Richard is incorrect here; grub2 can live on any filesystem,
22 >> so long as some combination of modules can access it.
23 >>
24 >
25 > Do you know what function the BIOS Boot Partion serves? It is necessary
26 > when using GRUB2's ZFS support. I was under the impression that it
27 > stored boot code.
28 >
29
30 Based on a Google search I think "BIOS Boot Partition" is a GPT thing.
31 Not relevent if you have an MBR partition table.

Replies

Subject Author
Re: [gentoo-dev] grub:2 keywords Richard Yao <ryao@g.o>