Lenovo I53427U4GB Tablet User Manual


 
Table 7. Startup menu items (continued)
Menu item
Selection Comments
UEFI/Legacy Boot
Both
UEFI/Legacy Boot Priority
UEFI rst
Legacy rst
UEFI Only
Legacy Only
CSM Support (for UEFI Only)
Yes
No
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.
Boot Mode
Quick
Diagnostics
Note: You also can enter the
Diagnostic mode by pressing Esc
during POST.
Screen during POST:
Quick: The ThinkPad Logo screen
is displayed.
Diagnostics: Test messages are
displayed.
Option Key Display
Disabled
Enabled
If you select Disabled, the message
“To interrupt normal startup, press
Enter.” message is not displayed
during the POST.
Boot Device List F12 Option
Disabled
Enabled
If you select Enabled, the F12 key
is recognized and the Boot Menu
window is displayed.
Boot Order Lock
Disabled
Enabled
If you select Enabled, the boot
priority is locked for your future use.
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 is 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 certication 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.
Chapter 6. Advanced conguration 83