Startup Menu - Lenovo ThinkPad S1 Yoga User Manual

Table 6. Security menu items (continued)
Menu item

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. Restart the computer. When the ThinkPad logo is displayed, press F12.
2. 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.
Note: Some items are displayed on the menu only if the computer supports the corresponding features.
Submenu item
Secure Boot Mode
Reset to Setup Mode
Restore Factory keys
Selection Comments
• Standard Mode Specify the Secure Boot mode.
• Custom Mode
• Yes This option is used to clear the
current platform key and put the
• No
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.
• Yes This option is used to restore all
keys and certificates in Secure Boot
• No
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 Windows 8.1
operating system.
Chapter 7
.
Advanced configuration
89