Startup Menu - Lenovo ThinkPad Edge E430 User Manual

Table 5. Security menu items (continued)
Menu item
Secure Boot

Startup menu

You might need to change the startup sequence of your computer. For example, if you have different
operating systems on different devices, you can have the system start up from either of them.
Attention: After you change your startup sequence, you must be extremely careful not to specify a wrong
device during a copy, a save, or a format operation. If you specify a wrong device, your data and programs
might be erased or overwritten.
Attention: If you are using the BitLocker
BitLocker drive encryption detects the change of startup sequence and locks the computer from booting.
Changing the startup sequence
Selecting Startup to display the Boot submenu.
To change the startup sequence, do the following:
Submenu item
Secure Boot
Platform Mode
Secure Boot Mode
Reset to Setup Mode
Restore Factory keys
®
drive encryption, you should not change the startup sequence.
Selection
• Disabled
• Enabled
User Mode
Standard Mode
• Yes
• No
• Yes
• No
Chapter 7
Comments
Note: If you set the
Computrace module
activation to Permanently
Disabled, you will be
unable to enable this
setting again.
Enable or disable UEFI
Secure Boot feature.
Windows 8 operating
system requires this feature
to be enabled.
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 Windows
8 operating system.
.
Advanced configuration
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