nPartition Administrator's Guide, Second Edition

NOTE: Red Hat Enterprise Linux does not support using CLM. Before booting Red Hat
Enterprise Linux on an nPartition, you must ensure that the CLM parameter for each cell in the
nPartition is set to zero (0). Although you might be able to boot Red Hat Enterprise Linux on an
nPartition with CLM configured, any memory configured as cell local is unusable, and such a
configuration is untested and unsupported.
SuSE Linux Enterprise Server supports using CLM. The optimal CLM settings for SuSE Linux
Enterprise Server depend on the applications and workload the OS is running.
To check CLM configuration details from an OS, use Partition Manager or the parstatus
command. For example, the parstatus -V -c# command and parstatus -V -p# command
report the CLM amount requested and CLM amount allocated for the specified cell (-c#, where
# is the cell number) or the specified nPartition (-p#, where # is the nPartition number).
To check CLM configuration details from the EFI Shell on a cell-based HP Integrity server, use
the info mem command. If the amount of "NonInterleaved Memory" reported is less than 512
MB then no CLM is configured for any cells in the nPartition (and the indicated amount of
noninterleaved memory is used by system firmware). If the info mem command reports more
than 512 MB of noninterleaved memory then use use Partition Manager or the parstatus
command to confirm the CLM configuration details.
To set the CLM configuration, use Partition Manager or the parmodify command.
Adding Linux to the Boot Options List
This section describes how to add a Linux entry to the system boot options list. The processes
for adding both Red Hat Enterprise Linux and SuSE Linux Enterprise Servers are given here.
You can add the \EFI\redhat\elilo.efi loader or the \efi\SuSE\elilo.efi loader to
the boot options list from the EFI Shell or EFI Boot Configuration menu (or in some versions
of EFI, the Boot Option Maintenance menu).
NOTE: On HP Integrity servers, the operating system installer automatically adds an entry to
the boot options list.
Procedure 5-22 Adding a Linux Boot Option
This procedure adds a Linux item to the boot options list.
1. Access the EFI Shell environment.
Log in to the management processor and enter CO to access the system console.
When accessing the console, confirm that you are at the EFI Boot Manager menu (the main
EFI menu). If at another EFI menu, select the Exit option from the sub-menus until you
return to the screen with the EFI Boot Manager heading.
From the EFI Boot Manager menu, select the EFI Shell menu option to access the EFI Shell
environment.
2. Access the EFI System Partition (fsX: where X is the file system number) for the device
from which you want to boot Linux.
For example, enter fs2: to access the EFI System Partition for the bootable file system
number 2. The EFI Shell prompt changes to reflect the file system currently accessed.
The full path for the Red Hat Enterprise Linux loader is \EFI\redhat\elilo.efi and it
should be on the device you are accessing.
The full path for the SuSE Linux Enterprise Server loader is \efi\SuSE\elilo.efi and
it should be on the device you are accessing.
130 Booting and Resetting nPartitions