Table 5. Security menu items (continued)

Menu item

Submenu item

Selection

Comments

 

 

 

 

 

Secure Boot

Secure Boot

Disabled

Enable or disable UEFI

 

 

Enabled

Secure Boot feature.

 

 

Windows 8 operating

 

 

 

 

 

 

 

 

system requires this feature

 

 

 

 

to be enabled.

 

 

 

 

 

Platform Mode

User Mode

 

 

 

 

 

 

Secure Boot Mode

Standard Mode

 

 

 

 

 

 

 

Reset to Setup Mode

Yes

This option is used to clear

 

 

No

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

Yes

This option is used to

 

 

No

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.

 

 

 

 

 

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® drive encryption, you should not change the startup sequence. 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:

1.Select Boot; then press Enter.

You can use the Boot submenu to specify the startup sequence that runs when you turn on the power. Refer to “Boot submenu” on page 115.

2.Select the device you want to start first.

3.Press Fn+F10 to save the changes and restart the system.

114User Guide

Page 130
Image 130
Lenovo E431 Startup menu, Changing the startup sequence, Menu item Submenu item Selection Comments Secure Boot, User Mode