HP Integrity rx7620 Server - User Service Guide, Sixth Edition

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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 216).
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.
For details, see “Red Hat Linux Operating System Booting from the EFI Shell” (page 212).
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 D-6 Red Hat Linux Operating System Booting from the EFI Shell
To boot Red Hat Linux from the EFI Shell, follow these steps:
For required configuration details, see “ACPI Configuration for Red Hat Linux 3 Must Be
“single-pci-domain”” (page 212).
1. Access the EFI Shell.
From the system console, select the EFI Shell entry from the EFI Boot Manager menu to
access the shell.
2. Access the EFI System Partition for the Red Hat Linux boot device.
Use the map EFI Shell command to list the filesystems (fs0, fs1, and so on) that are known
and have been mapped.
212 Operating System Boot and Shutdown