Startup Menu - ThinkPad E470 User Manual

Disabled is the default value when OS Optimized is set to Disabled. Enabled is the default value
when OS Optimized is set to Enabled.
Note: To enable Secure Boot, you need to set the startup setting as UEFI Only and set CSM Support
as No.
• Platform Mode
Values: Setup Mode, User Mode
Descriptions: Specify the system operating mode.
• Secure Boot Mode
Values: Standard Mode, Custom Mode
Descriptions: Specify the Secure Boot mode.
• Reset to Setup Mode
Descriptions: This option is used to clear the current platform key and put the system into Setup Mode.
You can install your own platform key and customize the Secure Boot signature databases in Setup
Mode. Secure Boot mode will be set to Custom Mode.
• Restore Factory Keys
Descriptions: Use this option to restore all keys and certificates in Secure Boot databases to the factory
defaults. Any customized Secure Boot settings will be erased, and the default Platform Key will be
re-established along with the original signature databases including certificate for the operating systems.
• Clear All Secure Boot Keys
Descriptions: Use this option to clear all keys and certificates in Secure Boot databases and install
your own keys and certificates.
Intel (R) SGX
• Intel (R) SGX Control
Values: Disabled, Enabled, Software Controlled
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.
Note: This submenu is available on models with an Intel CPU.

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.
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Chapter 5 Advanced configuration
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