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7. Preboot Security Requirements

When a preboot application is launched, it has as much control of the system

resource as the BIOS. Since these applications reside on the public hard drive

partition which are easily accessible and thus hacked, it's necessary for BIOS to

only launch HP signed preboot applications.

BIOS F10 provides several policies to control the availability of Boot from EFI File

option in the Boot Manager when F9 is pressed (for details, see How EFI Launches

EFI Applications)

System Configuration ‐> Device Configurations

UEFI Boot Mode Enable/Disable Default: Disable

This policy controls whether the BIOS allows to boot to an EFI file. For security,

it's recommended to be disabled.

When UEFI Boot Mode is disabled, the "Boot from EFI File" option will not show

up in the Boot Manager when F9 is pressed. In such a case, the only way to

launch HP EFI applications is to use the hot key.

Customized Logo

The EFI BIOS provides the nice feature for the user to customize the logo

displaying during the boot. The logo is a bitmap file that a customer can

add/change on the HP_TOOLS partition.

Since BIOS can't check the signature of the customized logo bitmap files, it may

be used as an attack tool of the BIOS post process. Thus an option is needed to

disable this capability for the highly sensitive security environment.

HP QuickLook E nable/Disable

The EFI BIOS provides the following policy to control the availability of the

QuickLook application option.

HP QuickWeb Enable/Disable

Enable/Disable

Default: Enable

Default: Disable