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 provides system firmware a boot menu that points to all the
operating systems, even multiple versions of the same operating systems.
The UEFI boot manager enables you to control the server 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. For more information, see
“Using the boot maintenance manager” (page 145)
.
UEFI shell and HP POSSE commands
For details on these commands, enter
help command
at the UEFI Shell prompt.
Table 45 UEFI shell commands
Definition
UEFI shell command
Displays the UEFI Shell command list or verbose command help
?
Displays, creates, or deletes UEFI Shell aliases
alias
Displays or changes the attributes of files or directories
attrib
Set/View autoboot timeout and retries
autoboot
Display/Modify the driver/boot configuration
bcfg
Turn specific speedyboot bits on or off
boottest
Displays or changes the current directory
cd
Clears standard output and optionally changes background color
cls
Compares the contents of two files
comp
Configure consoles and set/view primary operating system console
conconfig
Connects one or more UEFI drivers to a device
connect
Copies one or more files or directories to another location
cp
Deconfigure/Reconfigure processor sockets and threads
cpuconfig
Displays or changes the current system date
date
Displays one or more blocks from a block device
dblk
Manage direct boot profiles
dbprofile
Set default values
default
Displays the list of devices managed by UEFI drivers
devices
Displays the UEFI Driver Model compliant device tree
devtree
Displays UEFI handle information
dh
Disconnects one or more UEFI drivers from a device
disconnect
Displays the contents of memory
dmem
Displays, stores, and restores all UEFI NVRAM variables
dmpstore
Displays the UEFI driver list
drivers
Invokes the Driver Configuration Protocol
drvcfg
Invokes the Driver Diagnostics Protocol
drvdiag
HP Confidential
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Utilities