Linux From Scratch - Version loongarch-r13.0-77-systemd

Chapter 8. Installing Basic System Software

8.66. GRUB-2.14

The GRUB package contains the GRand Unified Bootloader.

[Note]

Note

The instruction for this package assumes your system utilizes the UEFI firmware. Otherwise your may have to configure GRUB differently (or GRUB may not work for the system at all), and you may need to figure out how to boot the LFS system on your own.

[Warning]

Warning

Unset any environment variables which may affect the build: 

unset {C,CPP,CXX,LD}FLAGS

Don't try “tuning” this package with custom compilation flags. This package is a bootloader. The low-level operations in the source code may be broken by aggressive optimization.

Approximate build time: 0.3 SBU
Required disk space: 202 MB

8.66.1. Installation of GRUB for UEFI

Now configure GRUB for UEFI support: 

./configure --prefix=/usr       \
            --sysconfdir=/etc   \
            --with-platform=efi \
            --disable-efiemu    \
            --disable-werror

The meaning of the new configure options:

--with-platform=efi

This specifies that EFI is a platform GRUB should target.

Compile the package for UEFI support: 

make

Install support for UEFI: 

make install

8.66.2. Contents of GRUB

Installed programs: grub-bios-setup, grub-editenv, grub-file, grub-fstest, grub-glue-efi, grub-install, grub-kbdcomp, grub-macbless, grub-menulst2cfg, grub-mkconfig, grub-mkimage, grub-mklayout, grub-mknetdir, grub-mkpasswd-pbkdf2, grub-mkrelpath, grub-mkrescue, grub-mkstandalone, grub-ofpathname, grub-probe, grub-reboot, grub-render-label, grub-script-check, grub-set-default, grub-sparc64-setup, and grub-syslinux2cfg
Installed directories: /usr/lib/grub, /etc/grub.d, /usr/share/grub, and /boot/grub (when grub-install is first run)

Short Descriptions

grub-bios-setup

Is a helper program for grub-install

grub-editenv

Is a tool to edit the environment block

grub-file

Checks to see if the given file is of the specified type

grub-fstest

Is a tool to debug the file system driver

grub-glue-efi

Glues 32-bit and 64-bit binaries into a single file (for Apple machines)

grub-install

Installs GRUB on your drive

grub-kbdcomp

Is a script that converts an xkb layout into one recognized by GRUB

grub-macbless

Is the Mac-style bless for HFS or HFS+ file systems (bless is peculiar to Apple machines; it makes a device bootable)

grub-menulst2cfg

Converts a GRUB Legacy menu.lst into a grub.cfg for use with GRUB 2

grub-mkconfig

Generates a grub.cfg file

grub-mkimage

Makes a bootable image of GRUB

grub-mklayout

Generates a GRUB keyboard layout file

grub-mknetdir

Prepares a GRUB netboot directory

grub-mkpasswd-pbkdf2

Generates an encrypted PBKDF2 password for use in the boot menu

grub-mkrelpath

Makes a system pathname relative to its root

grub-mkrescue

Makes a bootable image of GRUB suitable for a floppy disk, CDROM/DVD, or a USB drive

grub-mkstandalone

Generates a standalone image

grub-ofpathname

Is a helper program that prints the path to a GRUB device

grub-probe

Probes device information for a given path or device

grub-reboot

Sets the default boot entry for GRUB for the next boot only

grub-render-label

Renders Apple .disk_label for Apple Macs

grub-script-check

Checks the GRUB configuration script for syntax errors

grub-set-default

Sets the default boot entry for GRUB

grub-sparc64-setup

Is a helper program for grub-setup

grub-syslinux2cfg

Transforms a syslinux config file into grub.cfg format