Dell E05B001 Reference Manual - Page 23

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Option

Description

variables are protected in the environment and new UEFI boot entries are forced to be at the end of the

current boot order.

In-Band

When set to Disabled, this setting will hide the Management Engine's (ME), HECI devices, and the

Manageability

system's IPMI devices from the operating system. This prevents the operating system from changing the

Interface

ME power capping settings, and blocks access to all in-band management tools. All management should

be managed through out-of-band. This option is set to Enabled by default.

Secure Boot

Enables Secure Boot, where the BIOS authenticates each pre-boot image by using the certificates in the

Secure Boot Policy. Secure Boot is set to Disabled by default.

Secure Boot

When Secure Boot policy is set to Standard, the BIOS uses the system manufacturer's key and

Policy

certificates to authenticate pre-boot images. When Secure Boot policy is set to Custom, the BIOS uses

the user-defined key and certificates. Secure Boot policy is set to Standard by default.

Secure Boot

Configures how the BIOS uses the Secure Boot Policy Objects (PK, KEK, db, dbx).

Mode

If the current mode is set to Deployed Mode, the available options are User Mode and Deployed

Mode. If the current mode is set to User Mode, the available options are User Mode, Audit Mode, and

Deployed Mode.

Options

User Mode

Deployed Mode

Audit Mode

Secure Boot

Specifies the list of certificates and hashes that secure boot uses to authenticate images.

Policy Summary

Secure Boot

Configures the Secure Boot Custom Policy. To enable this option, set the Secure Boot Policy to Custom

Custom Policy

option.

Settings

Creating a system and setup password

Prerequisites

Ensure that the password jumper is enabled. The password jumper enables or disables the system password and setup password

features. For more information, see the System board jumper settings section.

NOTE:

If the password jumper setting is disabled, the existing system password and setup password are deleted and you

need not provide the system password to boot the system.

Steps

1. To enter System Setup, press F2 immediately after turning on or rebooting your system.

NOTE:

BIOS update requires HECI devices to be operational and DUP updates require IPMI interface

to be operational. This setting needs to be set to Enabled to avoid updating errors.

Description

In User Mode, PK must be installed, and BIOS performs signature verification on

programmatic attempts to update policy objects.

The BIOS allows unauthenticated programmatic transitions between modes.

Deployed Mode is the most secure mode. In Deployed Mode, PK must be

installed and the BIOS performs signature verification on programmatic attempts

to update policy objects.

Deployed Mode restricts the programmatic mode transitions.

In Audit mode, PK is not present. The BIOS does not authenticate programmatic

updates to the policy objects, and transitions between modes.

Audit Mode is useful for programmatically determining a working set of policy

objects.

BIOS performs signature verification on pre-boot images and logs results in the

image Execution Information Table, but executes the images whether they pass or

fail verification.

BIOS and UEFI