Aug 31, 2021 · GNU GRUB is a Multiboot boot loader. It was derived from GRUB, the GRand Unified Bootloader , which was originally designed and implemented by Erich Stefan Boleyn. Briefly, a boot loader is the first software program that runs when a computer starts.

Aug 31, 2021 · GRUB is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

GRUB works around it by detecting sectors by other software and avoiding them and protecting its own sectors using Reed-Solomon encoding. GRUB team recommends having MBR gap of at least 1000 KiB. Should it not be possible, GRUB has support for a fallback solution which is heavily recommended against.

Aug 31, 2021 · You can obtain the latest GRUB source from the GIT: git clone https://git.savannah.gnu.org/git/grub.git. For developers with write access via ssh, use: git clone <membername>@git.sv.gnu.org:/srv/git/grub.git. You can also use HTTP if needed.

GRUB has both a simple menu interface for choosing preset entries from a configuration file, and a highly flexible command-line for performing any desired combination of boot commands. GRUB looks for its configuration file as soon as it is loaded.

In order to install GRUB under a UNIX-like OS (such as GNU), invoke the program grub-install (see Invoking grub-install) as the superuser (root). The usage is basically very simple. You only need to specify one argument to the program, namely, where to install the boot loader.

the GNU GRUB manual The GRand Unified Bootloader, version 2.12, 5 December 2023. Gordon Matzigkeit Yoshinori K. Okuji Colin Watson Colin D. Bennett

The GRUB kernel is in ‘grub-core/kern/’. This contains core facilities such as the device, disk, and file frameworks, environment variable handling, list processing, and so on.

In this chapter, we list all commands that are available in GRUB. Commands belong to different groups. A few can only be used in the global section of the configuration file (or “menu”); most of them can be entered on the command-line and can be used either anywhere in the menu or specifically in the menu entries.

This is the documentation of GNU GRUB, the GRand Unified Bootloader, a flexible and powerful boot loader program for a wide range of architectures. This edition documents version 2.12. This manual is for GNU GRUB (version 2.12, 5 December 2023).