Lenovo ThinkPad Yoga 14 (English) User Guide - ThinkPad Yoga 14 - Page 89

Boot Device List F12 Option, Boot Order Lock

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Table 6. Startup menu items Menu item Boot UEFI/Legacy Boot Boot Mode Option Key Display Boot Device List F12 Option Boot Order Lock Selection • Both • UEFI Only • Legacy Only UEFI/Legacy Boot Priority • Legacy First • UEFI First CSM Support • No • Yes • Quick • Diagnostics • Enabled • Disabled • Enabled • Disabled • Disabled • Enabled Comments Select the boot device when you press the power button to turn on the computer. Select system boot capability. • Both: The system boots by the following UEFI/Legacy Boot Priority setting. • UEFI Only: The system boots from the UEFI enabled operating system. • Legacy Only: The system boots 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 will be selectable. For Both or Legacy Only mood, CSM Support will not be selectable. Note: The Both and the CSM Support selections are available when theOS Optimized Defaults on the Restart menu is set as Disabled, the UEFI Only selection is available when theOS Optimized Defaults on the Restart menu is set as Enabled. Quick: The diagnostic splash screen will not be displayed unless you press Esc during starting the system. Diagnostics: The diagnostic splash screen is always displayed during starting the system. Choose whether to show the option key message when the system is started. If you select Enabled, a pop-up boot device List will be displayed when you press F12 key. Note: Only the person who knows the supervisor password can change the setting of this option. 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 5. Advanced configuration 73

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Table 6. Startup menu items
Menu item
Selection
Comments
Boot
Select the boot device when you
press the power button to turn on the
computer.
UEFI/Legacy Boot
Both
• UEFI Only
• Legacy Only
UEFI/LegacyBootPriority
Legacy First
• UEFI First
CSMSupport
• No
Yes
Select system boot capability.
Both
: The system boots by the
following
UEFI/LegacyBootPriority
setting.
UEFI Only
: The system boots from
the UEFI enabled operating system.
LegacyOnly
: The system boots 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
will be selectable. For
Both
or
Legacy Only
mood,
CSM Support
will
not be selectable.
Note:
The
Both
and the
CSM Support
selections are available when the
OS
Optimized Defaults
on the
Restart
menu is set as
Disabled
, the
UEFI
Only
selection is available when the
OS
Optimized Defaults
on the
Restart
menu is set as
Enabled
.
Boot Mode
Quick
• Diagnostics
Quick
: The diagnostic splash screen will
not be displayed unless you press Esc
during starting the system.
Diagnostics
: The diagnostic splash
screen is always displayed during
starting the system.
Option Key Display
Enabled
• Disabled
Choose whether to show the option key
message when the system is started.
Boot Device List F12 Option
Enabled
• Disabled
If you select
Enabled
, a pop-up boot
device List will be displayed when you
press F12 key.
Note:
Only the person who knows the
supervisor password can change the
setting of this option.
Boot Order Lock
Disabled
• Enabled
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 5
.
Advanced configuration
73