Lenovo ThinkPad P40 Yoga User Manual page 96

Table 4. Security menu items (continued)
Menu item
UEFI BIOS Update Option
Memory Protection
Virtualization
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ThinkPad P40 Yoga, ThinkPad S3, ThinkPad Yoga 14, and ThinkPad Yoga 460 User Guide
Submenu item
Flash BIOS Updating by
End-Users
Secure RollBack
Prevention
Execution Prevention
Intel(R) Virtualization
Technology
Intel(R) VT-d Feature
Selection Comments
• Disabled If you select Enabled, all users can
update the UEFI BIOS. If you select
• Enabled
Disabled, only the person who
knows the supervisor password can
update the UEFI BIOS.
• Disabled If you select Disabled, you can flash
to an earlier version of the UEFI
• Enabled
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.
• Disabled
Some computer viruses and worms
cause memory buffers to overflow.
• Enabled
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.
• Disabled If you select Enabled, a Virtual
Machine Monitor (VMM) can utilize
• Enabled
the additional hardware capabilities
provided by Intel Virtualization
Technology.
• Disabled Intel VT-d stands for Intel
Virtualization Technology for
• Enabled
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.