Dell M630 owner manual Secure Boot Custom Policy Settings screen

Menu Item	Description
TPM Command	CAUTION: Clearing the TPM results in the loss of all keys in the
	TPM. The loss of TPM keys may affect booting to the operating
	system.
	Allows you to clear all the contents of the TPM. By default, the TPM Clear
	option is set to No.
Intel TXT	Allows you to enable or disable Intel Trusted Execution Technology
	(TXT). To enable Intel TXT, Virtualization Technology must be enabled
	and TPM Security must be Enabled with Pre-boot measurements. By
	default, the Intel TXT option is set to Off.
Power Button	Allows you to enable or disable the power button on the front of the
	system. By default, the Power Button option is set to Enabled.
AC Power Recovery	Allows you to set how the system reacts after AC power is restored to the
	system. By default, the AC Power Recovery option is set to Last.
UEFI Variable Access	Provides varying degrees of securing UEFI variables. When set to
	Standard (the default) UEFI variables are accessible in the Operating
	System per the UEFI specification. When set to Controlled, selected UEFI
	variables are protected in the environment and new UEFI boot entries are
	forced to be at the end of the current boot order.
Secure Boot	Allows you to enable Secure Boot, where the BIOS authenticates each
	pre-boot image using the certificates in the Secure Boot Policy. Secure
	Boot is disabled by default.
Secure Boot Policy	When Secure Boot policy is Standard, the BIOS uses the system
	manufacturer’s key and certificates to authenticate pre-boot images.
	When Secure Boot policy is Custom, the BIOS uses the user-defined key
	and certificates. Secure Boot policy is Standard by default.
Secure Boot Policy	Allows you to view the list of certificates and hashes that secure boot
Summary	uses to authenticated images.

Secure Boot Custom Policy Settings screen

Secure Boot Custom Policy Settings is displayed only when Secure Boot Policy is set to Custom.

In the System Setup Main Menu, click System BIOS → System Security → Secure Boot Custom Policy Settings.

Menu Item	Description
Platform Key	Allows you to import, export, delete, or restore the platform key (PK).

Key Exchange Key Database Allows you to import, export, delete, or restore entries in the Key Exchange Key (KEK) Database

Authorized Signature	Allows you to import, export, delete, or restore entries in the Authorized
Database	Signature Database (db).
Forbidden Signature	Allows you to import, export, delete, or restore entries in the Forbidden
Database	Signature Database (dbx).

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