GRUB-2.12 for EFI

Introduction to GRUB

The GRUB package provides GRand Unified Bootloader. In this page it will be built with UEFI support, which is not enabled for GRUB built in LFS.

This package is known to build and work properly using an LFS 12.1 platform.

Package Information

  • Download (HTTP):

  • Download MD5 sum: 60c564b1bdc39d8e43b3aab4bc0fb140

  • Download size: 6.4 MB

  • Estimated disk space required: 183 MB

  • Estimated build time: 0.4 SBU (on 64-bit LFS, using parallelism=4)

Additional Downloads

Unicode font data used to display GRUB menu

GCC (only needed if building on 32-bit LFS)

GRUB Dependencies




Installation of GRUB

First, install font data as the root user:

mkdir -pv /usr/share/fonts/unifont &&
gunzip -c ../unifont-15.1.04.pcf.gz > /usr/share/fonts/unifont/unifont.pcf


Unset any environment variables which may affect the build:


Don't try tuning this package with custom compilation flags: this package is a bootloader, with low-level operations in the source code which is likely to be broken by some aggressive optimizations.

Add a file missing from the release tarball:

echo depends bli part_gpt > grub-core/extra_deps.lst

If you are running a 32-bit LFS, prepare a 64-bit compiler:

case $(uname -m) in i?86 )
    tar xf ../gcc-13.2.0.tar.xz
    mkdir gcc-13.2.0/build
    pushd gcc-13.2.0/build
        ../configure --prefix=$PWD/../../x86_64-gcc \
                     --target=x86_64-linux-gnu      \
                     --with-system-zlib             \
                     --enable-languages=c,c++       \
        make all-gcc
        make install-gcc
    export TARGET_CC=$PWD/x86_64-gcc/bin/x86_64-linux-gnu-gcc

Build GRUB with the following commands:

./configure --prefix=/usr        \
            --sysconfdir=/etc    \
            --disable-efiemu     \
            --enable-grub-mkfont \
            --with-platform=efi  \
            --target=x86_64      \
            --disable-werror     &&
unset TARGET_CC &&

This package does not have a test suite providing meaningful results.

Now, as the root user:

make install &&
mv -v /etc/bash_completion.d/grub /usr/share/bash-completion/completions

Command Explanations

--enable-grub-mkfont: Build the tool named grub-mkfont to generate the font file for the boot loader from the font data we've installed.



If the recommended dependency FreeType-2.13.2 is not installed, it is possible to omit this option and build GRUB. However, if grub-mkfont is not built, or the unicode font data is not available at the time GRUB is built, GRUB won't install any font for the boot loader. The GRUB boot menu will be displayed using a coarse font or in a smaller region on the screen.

--with-platform=efi: Ensures building GRUB with EFI enabled.

--target=x86_64: Ensures building GRUB for x86_64 even if building on a 32-bit LFS system. Most EFI firmware on x86_64 does not support 32-bit bootloaders.

--target=i386: A few 32-bit x86 platforms have EFI support. And, some x86_64 platforms have a 32-bit EFI implementation, but they are very old and rare. Use this instead of --target=x86_64 if you are absolutely sure that LFS is running on such a system.

Configuring GRUB

Using GRUB to make the LFS system bootable on UEFI platform will be discussed in Using GRUB to Set Up the Boot Process with UEFI.


See the page for GRUB in LFS book.