Table 4. Security menu items (continued)
Menu item
Submenu item
Selection
Comments
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
.
Platform Mode
• User Mode
• Setup Mode
Specify the system operating mode.
Secure Boot Mode
• Standard Mode
• Custom Mode
Specify the Secure Boot mode.
Reset to Setup Mode
• Yes
• No
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
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 10
operating system.
Clear All Secure Boot
Keys
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.
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.
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ThinkPad P40 Yoga, ThinkPad S3, ThinkPad Yoga 14, and ThinkPad Yoga 460 User Guide
Summary of Contents for ThinkPad Yoga 460
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