Dell E30S owner manual Secure Boot Custom Policy Settings screen

Menu Item	Description
Intel TXT	Enables or disables the 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	Enables or disables the power button on the front of the system. By
	default, the Power Button option is set to Enabled.
NMI Button	Enables or disables the NMI button on the front of the system. By default,
	the NMI Button option is set to Disabled.
AC Power Recovery	Sets how the system reacts after AC power is restored to the system. By
	default, the AC Power Recovery option is set to Last.
AC Power Recovery Delay	Sets how the system supports staggering of power up after AC power is
	restored to the system. By default, the AC Power Recovery Delay option
	is set to Immediate.
User Defined Delay (60s to	Sets the User Defined Delay when the User Defined option for AC Power
240s)	Recovery Delay is selected.
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	Enables 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	Displays the list of certificates and hashes that secure boot uses to
Summary	authenticate 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	Imports, exports, deletes, or restores 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 Database	Imports, exports, deletes, or restores entries in the
	Authorized Signature Database (db).
Forbidden Signature Database	Imports, exports, deletes, or restores entries in the
	Forbidden Signature Database (dbx).

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