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
DefinitionUEFI shell command
Displays the UEFI Shell command list or verbose command help?
Displays, creates, or deletes UEFI Shell aliasesalias
Displays or changes the attributes of files or directoriesattrib
Set/View autoboot timeout and retriesautoboot
Display/Modify the driver/boot configurationbcfg
Turn specific speedyboot bits on or offboottest
Displays or changes the current directorycd
Clears standard output and optionally changes background colorcls
Compares the contents of two filescomp
Configure consoles and set/view primary operating system consoleconconfig
Connects one or more UEFI drivers to a deviceconnect
Copies one or more files or directories to another locationcp
Deconfigure/Reconfigure processor sockets and threadscpuconfig
Displays or changes the current system datedate
Displays one or more blocks from a block devicedblk
Manage direct boot profilesdbprofile
Set default valuesdefault
Displays the list of devices managed by UEFI driversdevices
Displays the UEFI Driver Model compliant device treedevtree
Displays UEFI handle informationdh
Disconnects one or more UEFI drivers from a devicedisconnect
Displays the contents of memorydmem
Displays, stores, and restores all UEFI NVRAM variablesdmpstore
Displays the UEFI driver listdrivers
Invokes the Driver Configuration Protocoldrvcfg
Invokes the Driver Diagnostics Protocoldrvdiag
HP Confidential142 Utilities
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