Lenovo ThinkPad Yoga 14 (English) User Guide - ThinkPad Yoga 14 - Page 86

directed I/O. When enabled, a VMM, OS Optimized Defaults

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Table 5. Security menu items (continued) Menu item Submenu item UEFI BIOS Update Option Flash BIOS Updating by End-Users Selection • Disabled • Enabled Secure RollBack Prevention • Disabled • Enabled Memory Protection Execution Prevention • Disabled • Enabled Virtualization Intel(R) Virtualization Technology • Disabled • Enabled Intel(R) VT-d Feature • Disabled • Enabled Comments If you select Enabled, all users can update the UEFI BIOS. If you select Disabled, only the person who knows the supervisor password can update the UEFI BIOS. If you select Disabled, you can flash to an earlier version of the UEFI BIOS. If you select Enabled, you cannot flash to an earlier version of the UEFI BIOS. Note: This item is set as Disabled by default when the OS Optimized Defaults on the Restart menu is set as Disabled. This item is set as Enabled by default when the OS Optimized Defaults is set as Enabled. Some computer viruses and worms cause memory buffers to overflow. By selecting Enabled you can protect your computer against attacks by such viruses and worms. If you find that an application program does not run correctly after choosing Enabled, select Disabled and reset the setting. If you select Enabled, a Virtual Machine Monitor (VMM) can utilize the additional hardware capabilities provided by Intel Virtualization Technology. Intel VT-d stands for Intel Virtualization Technology for directed I/O. When enabled, a VMM can utilize the platform infrastructure for I/O virtualization. Note: This item is available when the processor of your computer supports this feature. 70 User Guide

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Table 5. Security menu items (continued)
Menu item
Submenu item
Selection
Comments
Flash BIOS Updating by
End-Users
• Disabled
•
Enabled
If you select
Enabled
, all users can
update the UEFI BIOS. If you select
Disabled
, only the person who
knows the supervisor password can
update the UEFI BIOS.
UEFIBIOSUpdateOption
Secure RollBack
Prevention
•
Disabled
• Enabled
If you select
Disabled
, you can flash
to an earlier version of the UEFI
BIOS.
If you select
Enabled
, you cannot
flash to an earlier version of the UEFI
BIOS.
Note:
This item is set as
Disabled
by default when the
OS Optimized
Defaults
on the
Restart
menu is
set as
Disabled
. This item is set
as
Enabled
by default when the
OS Optimized Defaults
is set as
Enabled
.
Memory Protection
Execution Prevention
• Disabled
•
Enabled
Some computer viruses and worms
cause memory buffers to overflow.
By selecting
Enabled
you can
protect your computer against
attacks by such viruses and worms.
If you find that an application
program does not run correctly after
choosing
Enabled
, select
Disabled
and reset the setting.
Intel(R) Virtualization
Technology
•
Disabled
• Enabled
If you select
Enabled
, a Virtual
Machine Monitor (VMM) can utilize
the additional hardware capabilities
provided by Intel Virtualization
Technology.
Virtualization
Intel(R) VT-d Feature
•
Disabled
• Enabled
Intel VT-d stands for Intel
Virtualization Technology for
directed I/O. When enabled, a VMM
can utilize the platform infrastructure
for I/O virtualization.
Note:
This item is available when
the processor of your computer
supports this feature.
70
User Guide