Lenovo ThinkPad T470s User Manual page 95

Descriptions: Enable or disable the Intel Software Guard Extensions (SGX) function. If you select
Software Controlled, SGX will be controlled by the operating system.
• Change Owner EPOCH
Value: Enter
Descriptions: Change Owner EPOCH to a random value. Use this option to clear SGX user data.
Device Guard
• Device Guard
Values: Disabled, Enabled
Descriptions: This option is used to support Microsoft Device Guard.
When this option is enabled, Intel Virtualization Technology, Intel VT-d Feature, Secure Boot, and OS
Optimized Defaults are automatically enabled. Boot order is not selectable. To complete the configuration
of Device Guard, you have to set a supervisor password.
When this option is disabled, the setup options are configurable and you can choose any boot options
to start the computer.
Startup menu
Note: The BIOS menu items might change without notice. Depending on the model, the default value
might vary.
• Boot
Descriptions: Define the startup sequence.
• Network Boot
Descriptions: Select the boot device when the system wakes from LAN. If Wake On LAN is enabled, the
network administrator can turn on all of the computers in a LAN remotely through network management
software.
• UEFI/Legacy Boot
Values: Both, UEFI Only, Legacy Only
Descriptions: Define the system boot capability.
– UEFI/Legacy Boot Priority
Values: Legacy First, UEFI First
Descriptions: Select the boot priority between UEFI and Legacy.
– CSM Support (for UEFI Only)
Values: Yes, No
Compatibility Support Module (CSM) is required for starting the legacy operating system. If you
select UEFI Only, CSM Support is selectable. For Both or Legacy Only mode, CSM Support is not
selectable.
Note: If you select UEFI Only, the computer cannot start from the bootable devices that do not have
the UEFI-enabled operating system.
• Boot Mode
Values: Quick, Diagnostics
Descriptions: Define which screen is displayed during the POST, the logo screen or the text message
screen.
• Option Key Display
Values: Disabled, Enabled
.
Chapter 6 Advanced configuration
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