Lenovo ThinkPad Yoga 14 User Manual page 104

Table 5. Security menu items (continued)
Menu item
Secure Boot
88
User Guide
Submenu item
Secure Boot
Platform Mode
Secure Boot Mode
Reset to Setup Mode
Restore Factory Keys
Clear All Secure Boot
Keys
Selection Comments
• Disabled Enable or disable the Secure Boot
feature.
• Enabled
If you enable the Secure Boot,
the following item settings on the
Startup menu also will change
automatically:
1. The UEFI/Legacy Boot setting
2. The CSM Support setting will
Select Enable to prevent
unauthorized operating systems
from running at boot time.
Select Disabled to allow any
operating systems to run at boot
time.
Note: This item is set as Disabled
by default when the OS Optimized
Defaults on the Restart menu is
set as Disabled. This item is set
as Enabled by default when the
OS Optimized Defaults is set as
Enabled.
• User Mode
Specify the system operating mode.
• Setup Mode
• 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.
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 Windows 8.1
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.
will change to UEFI Only.
change to No.