Software and configuration utilities 53
Toward the end of the boot process, the boot options screen appears. This screen is visible for several
seconds before the system attempts to boot from a supported boot device. During this time, you can
access the System Utilities by pressing the
F9
key.
•
Choose between supported modes: Legacy BIOS Boot Mode or UEFI Boot Mode
IMPORTANT:
If the default boot mode settings are different than the user defined settings, the
system may not boot the OS installation if the defaults are restored. To avoid this issue, use the
User Defined Defaults feature in UEFI System Utilities to override the factory default settings.
For more information, see the
HP UEFI System Utilities User Guide for HP ProLiant Gen9 Servers
on the HP
Restoring and customizing configuration settings
You can reset all configuration settings to the factory default settings, or you can restore system default
configuration settings, which are used instead of the factory default settings.
You can also configure default settings as necessary, and then save the configuration as the custom default
configuration. When the system loads the default settings, it uses the custom default settings instead of the
factory defaults.
Secure Boot configuration
Secure Boot is integrated in the UEFI specification on which the HP implementation of UEFI is based. Secure
Boot is completely implemented in the BIOS and does not require special hardware. It ensures that each
component launched during the boot process is digitally signed and that the signature is validated against a
set of trusted certificates embedded in the UEFI BIOS. Secure Boot validates the software identity of the
following components in the boot process:
•
UEFI drivers loaded from PCIe cards
•
UEFI drivers loaded from mass storage devices
•
Pre-boot UEFI shell applications
•
OS UEFI boot loaders
Once enabled, only firmware components and operating systems with boot loaders that have an appropriate
digital signature can execute during the boot process. Only operating systems that support Secure Boot and
have an EFI boot loader signed with one of the authorized keys can boot when Secure Boot is enabled. For
more information about supported operating systems, see the
HP UEFI System Utilities and Shell Release
Notes
on the HP website A physically present user can customize the certificates embedded in the UEFI BIOS by adding/removing
their own certificates.
Embedded UEFI shell
The system BIOS in all HP ProLiant Gen9 servers includes an Embedded UEFI Shell in the ROM. The UEFI
Shell environment provides an API, a command line prompt, and a set of CLIs that allow scripting, file
manipulation, and system information. These features enhance the capabilities of the UEFI System Utilities.
For more information, see the following documents:
