GNU GRUB manual 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). Copyright © 1999,2000,2001,2002,2004,2006,2008,2009,2010,2011,2012,2013 Free Software Foundation, Inc. Permission is granted to copy, dist