HP rp7440 User Service Guide, Fourth Edition - HP Integrity rx7640 and HP 9000 - 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 "Adding HP-UX to the Boot Options List" (page 95). - To set OpenVMS boot options refer to "Adding HP OpenVMS to the Boot Options List" (page 105). - To set Windows boot options refer to "Adding Microsoft Windows to the Boot Options List" (page 110). - To set Linux boot options refer to "Adding Linux to the Boot Options List" (page 115). • Hyper-Threading nPartitions that have dual-core Intel® Itanium® processors can support 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. System Boot Configuration Options 91