HP Integrity rx8620 Server User Service Guide

5. Exit the console and MP interfaces if finished using them.
To exit the console environment enter ^B (Control-B); this exits the console and returns to
the MP Main menu. To exit the MP, enter X at the Main menu.
Booting the Red Hat Linux Operating System
You can boot the Red Hat Linux operating system on HP Integrity servers using either of the
methods described in this section.
For details on shutting down the Red Hat Linux operating system, see “Shutting Down Linux”
(page 215).
CAUTION:
ACPI Configuration for Red Hat Linux 3 Must Be “single-pci-domain” On nPartition-capable HP
Integrity servers, to boot the Red Hat Linux 3 operating system, an nPartition must have its ACPI
configuration value set to single-pci-domain.
At the EFI Shell, enter the acpiconfig command with no arguments to list the current ACPI
configuration. If the acpiconfig value is not set to single-pci-domain, Red Hat Linux
could panic. In this situation you must reconfigure acpiconfig to eliminate any bus address
conflicts and ensure all I/O slots have unique addresses.
To set the ACPI configuration for Red Hat Linux 3: at the EFI Shell enter the acpiconfig
single-pci-domain command, and then enter the reset command for the nPartition to
reboot with the proper (single-pci-domain) configuration for Red Hat Linux 3.
Use either of these methods to boot Red Hat Linux:
• Select a Red Hat Linux entry from the EFI Boot Manager menu.
To load the Red Hat Linux operating system at the EFI Boot Manager menu, select its entry
from the list of boot options.
Selecting a Linux entry from the boot options list boots the operating system using
ELILO.EFI loader and the elilo.conf file.
• Invoke the ELILO.EFI Linux loader from the EFI Shell.
See the procedure “Red Hat Linux Operating System Booting from the EFI Shell” (page 210)
for details.
On a Red Hat Linux boot device EFI System Partition, the full paths to the loader and
configuration files are:
\EFI\redhat\elilo.efi
\EFI\redhat\elilo.conf
After selecting the filesystem for the boot device (for example, fs0:) you can invoke the
Linux loader from the EFI Shell prompt by entering the full path for the ELILO.EFI loader.
By default the ELILO.EFI loader boots Linux using the kernel image and parameters specified
by the default entry in the elilo.conf file on the EFI System Partition for the boot device.
To interact with the ELILO.EFI loader, interrupt the boot process (for example, enter a space)
at the ELILO boot prompt. To exit the ELILO.EFI loader use the exit command.
Procedure E-6 Red Hat Linux Operating System Booting from the EFI Shell
Use this procedure to boot Red Hat Linux from the EFI Shell.
For required configuration details, see “ACPI Configuration for Red Hat Linux 3 Must Be
“single-pci-domain”” (page 210).
1. Access the EFI Shell.
From the system console, select EFI Shell from the EFI Boot Manager menu to access the
shell.
210 Operating System Boot and Shutdown