E.6. GRUB Menu Configuration File
The configuration file (
), which is used to create the list of operating systems to boot in GRUB's menu interface, essentially allows the user to select a pre-set group of commands to execute. The commands given in Section E.5, “GRUB Commands”
can be used, as well as some special commands that are only available in the configuration file.
E.6.1. Configuration File Structure
The GRUB menu interface configuration file is
/boot/grub/grub.conf. The commands to set the global preferences for the menu interface are placed at the top of the file, followed by stanzas for each operating kernel or operating system listed in the menu.
The following is a very basic GRUB menu configuration file designed to boot either Fedora or Microsoft Windows Vista:
title Fedora (18.104.22.168-170.2.35.fc10.i686)
kernel /vmlinuz-22.214.171.124-170.2.35.fc10.i686 ro root=UUID=04a07c13-e6bf-6d5a-b207-002689545705 rhgb quiet
# section to load Windows
This file configures GRUB to build a menu with Fedora as the default operating system and sets it to autoboot after 10 seconds. Two sections are given, one for each operating system entry, with commands specific to the system disk partition table.
Note that the default is specified as an integer. This refers to the first
title line in the GRUB configuration file. For the
Windows section to be set as the default in the previous example, change the
Configuring a GRUB menu configuration file to boot multiple operating systems is beyond the scope of this chapter. Consult Section E.8, “Additional Resources”
for a list of additional resources.