Restart Menu - Lenovo ThinkPad P70 User Manual

Table 4. Startup menu items (continued)
Menu item
UEFI/Legacy Boot
Boot Mode
Option Key Display
Boot Device List F12 Option
Boot Order Lock

Restart menu

To exit the ThinkPad Setup program and restart the computer, select Restart from the ThinkPad Setup
menu.
The following submenu items are displayed:
• Exit Saving Changes: Save the changes and restart the computer.
• Exit Discarding Changes: Discard the changes and restart the computer.
• Load Setup Defaults: Restore to the factory default settings.
Note: Enable OS Optimized Defaults to meet the Windows 10 certification requirements. When you
change this setting, some other settings are changed automatically, such as CSM Support, UEFI/Legacy
Boot, Secure Boot, and Secure RollBack Prevention.
• Discard Changes: Discard the changes.
80
P70 User Guide
Value
• Both
– UEFI/Legacy Boot Priority
– UEFI First
– Legacy First
• UEFI Only
• Legacy Only
CSM Support (for UEFI Only)
• Yes
• No
• Quick
• Diagnostics
• Disabled
• Enabled
• Disabled
• Enabled
• Disabled
• Enabled
Comments
Select system boot capability.
• Both: Select priority of boot options
between UEFI and Legacy.
• 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 mode, CSM Support is not
selectable.
Screen during the POST:
• Quick: The logo screen is displayed.
• Diagnostics: Text messages are
displayed.
Note: You also can enter Diagnostic
mode by pressing Esc during the POST.
If you select Disabled, the "To interrupt
normal startup, press Enter." message 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 Enabled, the boot priority
order is locked for your future use.