Dell E74S Довідковий посібник - Сторінка 21

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1. System Setup

Table 22. System Security details (continued)

Option

Secure Boot Mode

Secure Boot Policy Summary

Secure Boot Custom Policy

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.

2. On the System Setup Main Menu screen, click System BIOS > System Security.

3. On the System Security screen, verify that Password Status is set to Unlocked.

4. In the System Password field, type your system password, and press Enter or Tab.

Use the following guidelines to assign the system password:

● A password can have up to 32 characters.

A message prompts you to reenter the system password.

5. Reenter the system password, and click OK.

Description

Custom, the BIOS uses the user-defined key and certificates. Secure Boot policy is set

to Standard by default.

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

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.

Table 23. Secure Boot Mode

Options

Descriptions

User Mode

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.

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

programmatic update to the policy objects and transitions between

modes. The BIOS performs a signature verification on pre-boot images

and logs the results in the image Execution Information Table, but

executes the images whether they pass or fail verification.

Audit Mode is useful for programmatic determination of a working set

of policy objects.

Deployed

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

Mode

must be installed and the BIOS performs signature verification on

programmatic attempts to update policy objects.

Deployed Mode restricts the programmatic mode transitions.

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

images.

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

Policy to Custom option.

Pre-operating system management applications