Option
Description
This field is read-only when
TPM Security
is set to
Off
. The action requires an additional reboot before it can take
effect.
Intel(R) TXT
Enables or disables the Intel Trusted Execution Technology (TXT) option. To enable the
Intel TXT
option,
virtualization technology and TPM Security must be enabled with Pre-boot measurements. This option is set to
Off
by default.
Power Button
Enables or disables the power button on the front of the system. This option is set to
Enabled
by default.
AC Power Recovery
Sets how the system behaves after AC power is restored to the system. This option is set to
Last
by default.
AC Power Recovery
Delay
Sets the time delay for the system to power up after AC power is restored to the system. This option is set to
Immediate
by default.
User Defined Delay
(60 s to 240 s)
Sets the
User Defined Delay
option when the
User Defined
option for
AC Power 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 by using the certificates in the Secure
Boot Policy. Secure Boot is set to
Disabled
by default.
Secure Boot Policy
When Secure Boot policy is set to
Standard
, the BIOS uses the system manufacturer’s key and 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 Policy
Summary
Specifies the list of certificates and hashes that secure boot uses to authenticate images.
Secure Boot
Custom Policy
Settings
Configures the Secure Boot Custom Policy. To enable this option, set the Secure Boot Policy to
Custom
option.
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.
A message prompts you to reenter the system password.
5
Reenter the system password, and click
OK
.
6
In the
Setup Password
field, type your setup password and press Enter or Tab.
A message prompts you to reenter the setup password.
7
Reenter the setup password, and click
OK
.
8
Press Esc to return to the System BIOS screen. Press Esc again.
A message prompts you to save the changes.
NOTE:
Password protection does not take effect until the system reboots.
Dell EMC PowerEdge R640 Installation and Service Manual
Pre-operating system management applications
59
