Startup Menu - Lenovo ThinkPad X1 Carbon User Manual

Table 3. Security menu items (continued)
Menu item Submenu item
Secure Boot Secure Boot
Platform Mode
Secure Boot Mode
Reset to Setup Mode
Restore Factory
Keys
Clear All Secure
Boot Keys

Startup menu

To change the startup settings of your computer, select the Startup tab from the ThinkPad Setup menu.
Attention:
• After you change the startup sequence, ensure that you select a correct device during a copy, a save, or a
format operation. Otherwise your data might be erased or overwritten.
• If you are using the BitLocker drive encryption, do not change the startup sequence. BitLocker drive
encryption locks the computer from starting once detects the change of startup sequence.
To change the startup sequence temporarily so that the computer starts from a desired drive, do the following:
1. Turn off the computer.
2. Turn on the computer. When the ThinkPad logo is displayed, press the F12 key.
3. Select the device that you want the computer to start from.
Note: The Boot menu will be displayed if the computer cannot start from any devices or the operating
system cannot be found.
The following table lists the Startup menu items. Default values are in boldface. The menu items might
change without notice. Depending on the model, the default value might vary.
Note: Some items are displayed on the menu only if the computer supports the corresponding features.
Value Comments
• Disabled Enable or disable the UEFI Secure Boot feature.
Select Enable to prevent unauthorized operating
• Enabled
systems from running at boot time. Select
Disabled to allow any operating systems to run
at boot time.
• Setup Mode Specify the system operating mode.
• User Mode
• Standard Mode Specify the Secure Boot mode.
• Custom Mode
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.
This option is used to restore all keys and
certificates in Secure Boot databases to 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
Windows 8 and Windows 10 operating system.
This option is used to clear all keys and
certificates in Secure Boot databases. You
can install your own keys and certificates after
selecting this option.
.
Chapter 6 Advanced configuration
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