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bug#27007: [PATCH 2/2] doc: Adapt to multiple bootloader support.
From: |
Danny Milosavljevic |
Subject: |
bug#27007: [PATCH 2/2] doc: Adapt to multiple bootloader support. |
Date: |
Mon, 5 Jun 2017 16:11:57 +0200 |
Hi Ludo,
On Mon, 05 Jun 2017 12:36:28 +0200
address@hidden (Ludovic Courtès) wrote:
> What happens with other bootloaders? Do we get older boot entries?
Yes, but U-Boot has no support for submenus, only one menu [1].
Extlinux-the-format technically does support submenus [2].
> > @item switch-generation
> What happens to the bootloader itself? Does it change the bootloader to
> the one that was chosen back then?
No. We had been thinking about it but it's unsafe to do that.
So instead switch-generation will always reuse the bootloader that was used in
the current generation.
switch-generation has the same effect as manually selecting another menu entry
from the boot menu on bootup would have had - it just additionally defaults to
that entry.
On the other hand, when you run "guix system reconfigure" or "guix system
init": There, it will install and use the (newly) specified one.
[1] See also <https://github.com/u-boot/u-boot/blob/master/cmd/bootmenu.c>.
[2] See also <http://www.syslinux.org/wiki/index.php?title=Menu#MENU_BEGIN>.