Red Hat ENTERPRISE LINUX 4.5.0 Reference Manual page 44

Chapter 2. The GRUB Boot Loader
• — Boots the operating system or chain loader that was last loaded.
boot
•
chainloader </path/to/file>
located on the first sector of the specified partition, use the blocklist notation,
the file name.
The following is an example
chainloader +1
• — Displays the current use of memory, based on information from the BIOS.
displaymem
This is useful to determine how much RAM a system has prior to booting it.
•
initrd </path/to/initrd>
booting. An
initrd
properly, such as when the root partition is formatted with the ext3 file system.
The following is an example
initrd /initrd-2.6.8-1.523.img
•
install <stage-1><install-disk><stage-2>pconfig-file
system MBR.
• — Signifies a device, partition, and file where the first boot loader image can be
<stage-1>
found, such as
(hd0,0)/grub/stage1
•
<install-disk>
such as .
(hd0)
• — Passes the stage 2 boot loader location to the stage 1 boot loader, such as
<stage-2>
(hd0,0)/grub/stage2
•
p<config-file>
configuration file specified by
Warning
The
install
•
kernel </path/to/kernel><option-1><option-N>
when booting the operating system. Replace
the partition specified by the root command. Replace
kernel, such as
root=/dev/VolGroup00/LogVol00
partition for the system is located. Multiple options can be passed to the kernel in a space
20
— Loads the specified file as a chain loader. If the file is
chainloader
— Enables users to specify an initial RAM disk to use when
is necessary when the kernel needs certain modules in order to boot
command:
initrd
.
— Specifies the disk where the stage 1 boot loader should be installed,
.
— This option tells the
<config-file>
command overwrites any information already located on the MBR.
command:
— Installs GRUB to the
command to look for the menu
install
, such as
(hd0,0)/grub/grub.conf
... — Specifies the kernel file to load
</path/to/kernel>
<option-1>
to specify the device on which the root
, instead of
+1
.
with an absolute path from
with options for the Linux