HP-UX System Administrator's Guide: Routine Management Tasks HP-UX 11i v3 (B3921-90023, September 2010)

NOTE: On partitionable systems, the default is not to search all cells and their interface
cards for devices, this is done to allow the boot process to proceed faster. If the device
from which you want to boot is not attached to an I/O card on the core cell, you must
use the search command at the EFI prompt to allow you to find additional devices on
other cells and I/O slots. Once a device is added to the boot manager menu that is
located on a different cell, EFI enumerate devices on that I/O card while performing
future boots.
On HP Integrity Superdome 2 systems, on an initial boot (clear NVRAM), UEFI drivers
are connected to the lowest numbered Integrity Blades and BIOX with I/O devices
assigned to the partition. On the next boot, drivers are not connected unless a boot
option is launched. If the UEFI Shell, Boot Maintenance Manager, or Device Manager
is launched, drivers are connected to the lowest number Integrity Blade and BIOX with
I/O, and any boot options that might have been created from a previous boot. For more
information on the search command see nPartition Administrator's Guide or thesearch(1M)
manpage from the UEFI Shell.
Booting from an Alternate Kernel File
The default kernel file name (and the kernel file name that is usually used) is vmunix.
The AUTO file in the EFI partition on a boot device typically contains the entry: “boot
vmunix” which references the file vmunix in the /stand file system on the selected
boot device.
If you normally boot from the kernel file /stand/vmunix but (for example) need to
temporarily boot from an alternate kernel file, follow this procedure substituting your
kernel file name for testvmunix:
1. If your system automatically boots, interrupt the autoboot sequence by hitting any
key on the console keyboard during the autoboot (time-out) delay.
2. Select EFI Shell [Built-in] from the boot options menu to start the EFI shell.
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