On 28/01/13 20:01, Felix Miata wrote:
On 2013-01-28 19:27 (GMT) Barry Jackson composed:
http://svnweb.mageia.org/packages/cauldron/grub2/current/SOURCES/README.Mageia?view=markup
Chainloading into grub2 is not the best way, due to the block lists
problem people keep mentioning and complaining about.
Grub2 can install it's kernel in the root filesystem which can be booted
directly. Installing the grub2 package, whether during install or later
automatically builds /boot/grub/i386-pc/core.img and also creates a
grub.cfg ready for use.
Chanloading is un-necessary since an entry in menu.lst on a legacy
system will boot a grub2 Mageia system using:
title Mageia via GRUB 2
root (hdx,y)
kernel /boot/grub2/i386-pc/core.img
...as explained in the above README.Mageia
I use a small grub2 partition sda1 as "master".
To boot into Mageia grub2 systems I use the grub2 multiboot command:
menuentry 'Mageia-3 multi sda6' {
search --no-floppy --label --set=root mageia-3
multiboot /boot/grub2/i386-pc/core.img
}
So IMO all of the FUD about "you can't install grub2 to the PBR" is
pointless since it's just not necessary.
Maybe not all is FUD. I don't see anything in that README that describes
a procedure for an OS/2 or eCS multibooter whose primary bootloader
and/or bootloader of choice is IBM Boot Manager, which is prerequisite
to booting OS/2 when it is installed to a logical partition (the only
place I've ever installed it in the past decade). It can't be told to
load a particular file on a partition, only its PBR via the simple
process of selecting a partition in its setup utility for inclusion in
its boot menu. It works (in effect, chainloads) fine for partitions on
which Grub Legacy has been configured with the Grub Legacy setup
command. The only options I see for such users is selecting a partition
with Grub Legacy configured with menu.lst stanza(s) that include
core.img, or configuring IBM BM as a secondary bootloader to a primary
bootloader that is not installed on the MBR.
Maybe.
I have no OS/2 systems to test with.
I think grub2 can be forced to write to the PBR (but I can't find it
documented just now).
Maybe you could investigate and test this and suggest an edit to the
README ?
