HP rp7440 Service Manual page 91

At the EFI Shell, the bcfg command supports listing and managing the boot options list for
all OSs except Microsoft Windows. On HP Integrity systems with Windows installed the
\MSUtil\nvrboot.efi utility is provided for managing Windows boot options from the
EFI Shell. On HP Integrity systems with OpenVMS installed, the \efi\vms\vms_bcfg.efi
and \efi\vms\vms_show utilities are provided for managing OpenVMS boot options.
The EFI Boot Configuration menu provides the Add a Boot Option, Delete Boot Option(s),
and Change Boot Order menu items. (If you must add an EFI Shell entry to the boot options
list, use this method.)
To save and restore boot options, use the EFI Shell variable command. The variable
-save file command saves the contents of the boot options list to the specified file on an
EFI disk partition. The variable -restore file command restores the boot options list
from the specified file that was previously saved. Details also are available by entering help
variable at the EFI Shell.
OS utilities for managing the boot options list include the HP-UX setboot command and
the HP OpenVMS @SYS$MANAGER:BOOT_OPTIONS.COM command.
The OpenVMS I64 installation and upgrade procedures assist you in setting up and validating
a boot option for your system disk. HP recommends that you allow the procedure to do
this. Alternatively, you can use the @SYS$MANAGER:BOOT_OPTIONS.COM command (also
referred to as the OpenVMS I64 Boot Manager utility) to manage boot options for your
system disk. The OpenVMS I64 Boot Manager (BOOT_OPTIONS.COM) utility is a menu-based
utility and is easier to use than EFI. To configure OpenVMS I64 booting on Fibre Channel
devices, you must use the OpenVMS I64 Boot Manager utility (BOOT_OPTIONS.COM). For
more information on this utility and other restrictions, refer to the HP OpenVMS for Integrity
Servers Upgrade and Installation Manual.
For details, refer to the following sections.
— To set HP-UX boot options refer to
— To set OpenVMS boot options refer to
(page 105).
— To set Windows boot options refer to
List" (page 110).
— To set Linux boot options refer to
Hyper-Threading
•
Hyper-Threading. Hyper-Threading provides the ability for processors to create a second
virtual core that allows additional efficiencies of processing. For example, a dual-core
processor with Hyper-Threading active can simultaneously run four threads.
The EFI Shell cpuconfig command can enable and disable Hyper-Threading for an
nPartition whose processors support it. Recent releases of the nPartition Commands and
Partition Manager also support Hyper-Threading.
Details of the cpuconfig command are given below and are available by entering help
cpuconfig at the EFI Shell.
— cpuconfig threads — Reports Hyper-Threading status for the nPartition
— cpuconfig threads on — Enables Hyper-Threading for the nPartition. After enabling
Hyper-Threading the nPartition must be reset for Hyper-Threading to be active.
— cpuconfig threads off — Disables Hyper-Threading for the nPartition. After
disabling Hyper-Threading the nPartition must be reset for Hyper-Threading to be
inactive
After enabling or disabling Hyper-Threading, the nPartition must be reset for the
Hyper-Threading change to take effect. Use the EFI Shell reset command.
"Adding HP-UX to the Boot Options List" (page
"Adding Linux to the Boot Options List" (page
nPartitions that have dual-core Intel® Itanium® processors can support
"Adding HP OpenVMS to the Boot Options List"
"Adding Microsoft Windows to the Boot Options
System Boot Configuration Options
95).
115).
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