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Section 5.4:Commands
From the menu interface, you can also press the
or the
key to move to a command line interface.
[c]
5.3.2 Menu Entry Editor Interface
To get to this interface, you must press the
for that entry are displayed here, and you can alter these command lines before booting the operating
system by adding (
[o]
After you have made your changes and the lines look like you want, you can hit the
them and boot the operating system. The
menu interface. The
[c]
5.3.3 Command Line Interface
This is the most basic GRUB interface, but it is also the one that gives you the most control. You can
type any relevant GRUB commands here followed by the
features some advanced shell-like features, including
key combinations when typing commands, such as
to move to the end of a line. In addition, the arrow,
[Ctrl]-[e]
they do in the bash shell.
5.3.4 Order of Interface Use
When the GRUB environment starts upon loading the second stage boot loader, it looks for its config-
uration file. When found, it uses the configuration file to build the menu list of operating systems to
load and moves you into the menu interface.
If the configuration file cannot be found, or if the configuration file is unreadable, GRUB will take
you to the command line interface to allow you to manually type the commands necessary to boot an
operating system.
If the configuration file is not valid, GRUB will print out the error and ask for input. This can be very
helpful, because you will be able to see precisely where the problem occurred and fix it in the file.
Pressing any key will take you back to the menu interface, where you can edit that menu option and
correct the problem based on the error reported by GRUB. If your correction fails, the error is reported
and you are allowed to start again.
5.4 Commands
GRUB contains a number of different commands that may be executed interactively in the command
line interface. Some of the commands accept options after their name, and these options should be
separated from the command and other options on that line by space characters.
after the current line;
[O]
[Esc]
key will take you to the command line interface.
key to edit the highlighted menu entry's commands
[e]
key from the menu interface. The GRUB commands
[e]
before it), editing (
key forgets your changes and takes you to the standard
key to execute them. This interface
[Enter]
[Tab]
key completion, based on context, and
[Ctrl]-[a]
to move to the beginning of a line, and
[Home]
), or deleting (
) them.
[e]
[d]
key to execute
[b]
,
, and
keys work as
[End]
[Delete]
107
[Ctrl]
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