Restart Menu - Lenovo ThinkPad S531 User Manual

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Table 6. Startup menu items (continued)
Menu item
UEFI/Legacy Boot
Boot Mode
Option Key Display
Boot Device List F12 Option
Boot Order Lock

Restart menu

If you need to close the ThinkPad Setup program and restart the system, select Restart from the ThinkPad
Setup program main menu. The following submenu options are displayed:
• Exit Saving Changes: Restart the system after saving the changes.
• Exit Discarding Changes: Restart the system without saving the changes.
• Load Setup Defaults: Load the default setting that was in effect at the time of purchase.
Enable OS Optimized Defaults to meet the Microsoft Windows 8 certification requirements. When you
change this setting, some other settings are changed automatically. The affected settings are CSM
Support, UEFI/Legacy Boot, Secure Boot, and Secure RollBack Prevention.
• Discard Changes: Discard the changes.
• Save Changes: Save the changes.
Selection
• Both
• UEFI Only
• Legacy Only
UEFI/Legacy Boot Priority
• UEFI First
• Legacy First
CSM Support (for UEFI Only)
• No
• Yes
• Quick
• Diagnostics
• Disabled
• Enabled
• Disabled
• Enabled
• Disabled
• Enabled
Comments
Select system boot capability.
• Both: The system will boot by the
following UEFI/Legacy Boot Priority
setting.
• UEFI Only: The system will boot from
the UEFI enabled operating system.
• Legacy Only: The system will boot
from any operating system other than
the UEFI enabled one.
Note: If you select UEFI Only, the
system cannot boot from the bootable
devices that do not have the UEFI
enabled operating system.
Compatibility Support Module (CSM) is
required for booting the legacy operating
system. If you select UEFI Only, CSM
Support is selectable. For Both or
Legacy Only mood, CSM Support is
not selectable.
The Quick boot is intended to boot the
operating system as soon as possible
by reducing the POST elapsed time. The
Diagnostics boot is to be used for the
problem determination by performing
tests of the devices.
If you select Disabled, then the message
"To interrupt normal startup, press Enter"
is not displayed during the POST.
If you select Enabled, the F12 key is
recognized and the Boot menu window
is displayed.
If you select Disabled, your computer
will boot using the default priority. If you
select Enabled, your computer will boot
using the priority you have customized.
.
Chapter 7
Advanced configuration
81

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