HP rp8420 HP 9000 rp8420 Server - User Service Guide, Fifth Edition - Page 204

Booting the Red Hat Linux Operating System

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5. Exit the console and management processor interfaces if finished using them. To exit the console environment type ^B (Control-B); this exits the console and returns to the management processor Main menu. To exit the management processor, type 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. See "Shutting Down Linux" (page 209) for details on shutting down the Red Hat Linux operating system. 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, then 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 204) 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, type a space) at the ELILO boot prompt. To exit the ELILO.EFI loader use the exit command. Procedure E-9 Red Hat Linux Operating System Booting from the EFI Shell Use this procedure to boot Red Hat Linux from the EFI Shell. See "ACPI Configuration for Red Hat Linux 3 Must Be "single-pci-domain"" (page 204) for required configuration details. 1. Access the EFI Shell. From the system console, select the EFI Shell entry from the EFI Boot Manager menu to access the shell. 204 Operating System Boot and Shutdown

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5.
Exit the console and management processor interfaces if finished using them.
To exit the console environment type
^B
(
Control-B
); this exits the console and returns to
the management processor Main menu. To exit the management processor, type
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.
See
“Shutting Down Linux” (page 209)
for details on shutting down the Red Hat Linux operating
system.
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
, then 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 204)
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, type a space)
at the
ELILO boot
prompt. To exit the
ELILO.EFI
loader use the
exit
command.
Procedure E-9 Red Hat Linux Operating System Booting from the EFI Shell
Use this procedure to boot Red Hat Linux from the EFI Shell.
See
“ACPI Configuration for Red Hat Linux 3 Must Be “single-pci-domain”” (page 204)
for
required configuration details.
1.
Access the EFI Shell.
From the system console, select the
EFI Shell
entry from the EFI Boot Manager menu to
access the shell.
204
Operating System Boot and Shutdown