update README.Fedora (#734090)

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Mads Kiilerich 2011-10-27 17:09:00 +02:00 committed by Peter Jones
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Using GNU GRUB 2 in Fedora
==========================
Though GRUB 2 provides various feature enhancements over previous GRUB
version (referred to as "GRUB", or "GRUB Legacy"), it did not reach its
stability and feature completness yet, and thus is not ready to replace
it for the whole user base. This package is primarily intended to
encourage testing and accelerate distribution integration.
It is generally safe to install the package. It is able to co-exist with
existing GRUB installation and adds itself to the GRUB menu upon
installation, so you'll able to select GRUB 2 from GRUB menu during
the boot.
GRUB 2 provides various feature enhancements over the previous GRUB version
(referred to as "GRUB", or "GRUB Legacy") which has been unmaintained upstream
for years. GRUB has thus been deprecated in Fedora and replaced by GRUB 2 for
BIOS systems. (EFI systems still uses GRUB Legacy from the new grub-efi package.)
Utilities
---------
The GRUB 2 utilities are prefixed (or postfixed) with 'grub2':
The GRUB 2 utilities are prefixed with 'grub2':
grub2-bin2h
grub2-editenv
grub2-mkimage
grub2-mkelfimage
grub2-mkrescue
grub2-emu
grub2-fstest
grub2-install
grub2-kbdcomp
grub2-menulst2cfg
grub2-mkconfig
grub2-mkdevicemap
grub2-mkfont
grub2-mkimage
grub2-mklayout
grub2-mknetdir
grub2-mkpasswd-pbkdf2
grub2-mkrelpath
grub2-mkrescue
grub2-probe
grub2-reboot
grub2-script-check
grub2-set-default
grub2-setup
update-grub2
The default location for boot loader installation is /boot/grub2/ .
GRUB 2 in Fedora
----------------
The Fedora installer (anaconda) will make sure grub2 is installed for new and
updated systems. It will write /etc/default/grub and run grub2-mkconfig to
create /boot/grub2/grub.cfg, and it will run grub2-install to install the boot
loader in the MBR and in /boot/grub2/ .
grubby will patch grub.cfg (through /etc/grub2.cfg) when new kernels are
installed. The GRUB 2 configuration system in /etc/default/grub and /etc/grub.d/
is thus only used initially by anaconda, but it is possible to generate a new
grub.cfg with:
grub2-mkconfig -o /boot/grub2/grub.cfg
The active boot loader will not be changed when the GRUB 2 package is updated.
A new boot loader can be installed with something like:
grub2-install /dev/sda
Documentation
-------------
The GRUB 2 lacks documentation. While you are encouraged to contribute
the documentation, you can use the GRUB 2 Wiki [1] as primary source of
information pertaining to this development snapshot.
[1] http://grub.enbug.org/
If you intend to install grub2 as your primary boot loader refer to
the GRUB 2 Wiki for information on how to set it up.
The GRUB 2 manual can be found on http://www.gnu.org/software/grub/manual/ .
Support channels
----------------