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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, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections.
| • Introduction: | Capturing the spirit of GRUB | |
| • Naming convention: | Names of your drives in GRUB | |
| • OS-specific notes about grub tools: | Some notes about OS-specific behaviour of GRUB tools | |
| • Installation: | Installing GRUB on your drive | |
| • Booting: | How to boot different operating systems | |
| • Configuration: | Writing your own configuration file | |
| • Theme file format: | Format of GRUB theme files | |
| • Network: | Downloading OS images from a network | |
| • Serial terminal: | Using GRUB via a serial line | |
| • Vendor power-on keys: | Changing GRUB behaviour on vendor power-on keys | |
| • Images: | GRUB image files | |
| • Core image size limitation: | GRUB image files size limitations | |
| • Filesystem: | Filesystem syntax and semantics | |
| • Interface: | The menu and the command-line | |
| • Environment: | GRUB environment variables | |
| • Modules: | Available modules | |
| • Commands: | Available builtin commands | |
| • Internationalisation: | Topics relating to language support | |
| • Security: | Authentication, authorisation, and signatures | |
| • Platform limitations: | Platform-specific limitations | |
| • Platform-specific operations: | Platform-specific operations | |
| • Supported kernels: | Supported kernels | |
| • Troubleshooting: | Error messages produced by GRUB | |
| • User-space utilities: | Usage of user-space utilities | |
| • Obtaining and Building GRUB: | How to obtain and build GRUB | |
| • Reporting bugs: | Where you should send a bug report | |
| • Future: | Some future plans on GRUB | |
| • Copying This Manual: | Copying This Manual | |
| • Index: |
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