A Utilities; Uefi; Uefi Shell And Hp Posse Commands - HP Integrity Superdome 2 16-socket Service Manual

A Utilities

UEFI

UEFI is an OS and platform-independent boot and preboot interface. UEFI resides between the OS
and platform firmware, allowing the OS to boot without having details about the underlying
hardware and firmware. UEFI supports boot devices, uses a flat memory model, and hides platform
and firmware details from the OS.
NOTE: Unified EFI Forum, Inc. defines the specification used to implement UEFI. POSSE is an HP
extension to UEFI, which provides a common user interface architecture to better serve HP customers,
service, and manufacturing.
UEFI consolidates boot utilities similar to those found in PA-RISC-based servers, such as the BCH,
and platform firmware into a single platform firmware. UEFI allows the selection of any UEFI OS
loader from any boot medium that is supported by UEFI boot services. An UEFI OS loader supports
multiple options on the user interface.
UEFI supports booting from media that contain an UEFI OS loader or an UEFI-defined server
partition. An UEFI-defined system partition is required by UEFI to boot from a block device.
The UEFI boot manager loads UEFI applications (including the OS first-stage loader) and UEFI
drivers from an UEFI-defined file system or image loading service. NVRAM variables point to the
file to be loaded. These variables contain application-specific data that is passed directly to the
UEFI application. UEFI variables provide system firmware a boot menu that points to all the operating
systems; even multiple versions of the same operating systems.
The UEFI boot manager allows you to control the server's booting environment. Depending on how
you have configured the boot options, after the server is powered up, the boot manager presents
you with different ways to bring up the server. For example, you can boot to the UEFI shell, to an
operating system located on the network or residing on media in the server, or the Boot Maintenance
Manager. See

UEFI Shell and HP POSSE commands

For more information about these commands, enter helpcommand at the UEFI Shell prompt.
Table 19 UEFI Shell commands
UEFI Shell command
?
alias
attrib
autoboot
bcfg
boottest
cd
cls
comp
conconfig
connect
cp
date
"Using the Boot Maintenance Manager" (page 93)
Definition
Displays the UEFI Shell command list or verbose command help
Displays, creates, or deletes UEFI Shell aliases
Displays or changes the attributes of files or directories
Sets or displays autoboot timeout and retries
Displays or modifies the driver/boot configuration
Turns specific speedyboot bits on or off
Displays or changes the current directory
Clears standard output and optionally changes background color
Compares the contents of two files
Configures consoles and sets or displays primary operating system console
Connects one or more UEFI drivers to a device
Copies one or more files or directories to another location
Displays or changes the current system date
for more information.
UEFI 91