Dell XPS 16 9640 Owners Manual - Page 99

Table 41. BIOS Setup options-Pre-boot Behavior menu continued

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Table 41. BIOS Setup options-Pre-boot Behavior menu (continued) Preboot Behavior By default, the Prompt on Warnings and Errors option is selected. Stop, prompt, and wait for user input when warnings or errors are detected. NOTE: Errors deemed critical to the operation of the computer hardware stop the functioning of the computer. Extend BIOS POST Time Sets the BIOS POST (Power-On Self-Test) load time. By default, the 0 seconds option is selected. MAC Address Pass-Through Replaces the external NIC MAC address (in a supported dock or dongle) with the selected MAC address from the computer. By default, the Passthrough MAC Address option is selected. Mouse/Touchpad Defines how the computer handles mouse and touchpad input. By default, the Touchpad and PS/2 Mouse option is selected. Leaves the integrated touchpad enabled when an external PS/2 mouse is present. Sign of Life Early Logo Display Display Logo Sign of Life. By default, the Early Logo Display option is enabled. Early Keyboard Backlight Keyboard Backlight Sign of Life. By default, the Early Keyboard Backlight option is enabled. Table 42. BIOS Setup options-Virtualization menu Virtualization Support Intel Virtualization Technology Enable Intel Virtualization Technology (VT) When enabled, the computer can run a Virtual Machine Monitor (VMM). By default, the Enable Intel Virtualization Technology (VT) option is enabled. VT for Direct I/O Enable Intel VT for Direct I/O When enabled, the computer can perform Virtualization Technology for Direct I/O (VT-d). VT-d is an Intel method that provides virtualization for memory map I/O. By default, the Enable Intel VT for Direct I/O option is disabled. Intel Trusted Execution Technology (TXT) Intel Trusted Execution Technology (TXT) is a set of hardware extensions to Intel processors and chipsets. It provides a hardware-based root of trust to ensure that a platform boots with a known good configuration of firmware, BIOS, virtual machine monitor, and operating system. The following must be enabled in order to enable Intel TXT ● Intel Virtualization Technology - X ● Intel Virtualization Technology - Direct By default, the Intel Trusted Execution Technology (TXT) option is disabled. For additional security, Dell Technologies recommends keeping the Intel Trusted Execution Technology (TXT) option enabled. DMA Protection Enable Pre-Boot DMA Support Allows you to control the Pre-Boot DMA protection for both internal and external ports. This option does not directly enable DMA protection in the operating system. NOTE: This option is not available when the virtualization setting for IOMMU is disabled (VT-d/AMD Vi). BIOS Setup 99

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Table 41. BIOS Setup options—Pre-boot Behavior menu (continued)
Preboot Behavior
By default, the
Prompt on Warnings and Errors
option is selected. Stop,
prompt, and wait for user input when warnings or errors are detected.
NOTE:
Errors deemed critical to the operation of the computer hardware
stop the functioning of the computer.
Extend BIOS POST Time
Sets the BIOS POST (Power-On Self-Test) load time.
By default, the
0 seconds
option is selected.
MAC Address Pass-Through
Replaces the external NIC MAC address (in a supported dock or dongle) with the
selected MAC address from the computer.
By default, the
Passthrough MAC Address
option is selected.
Mouse/Touchpad
Defines how the computer handles mouse and touchpad input.
By default, the
Touchpad and PS/2 Mouse
option is selected. Leaves the
integrated touchpad enabled when an external PS/2 mouse is present.
Sign of Life
Early Logo Display
Display Logo Sign of Life.
By default, the
Early Logo Display
option is enabled.
Early Keyboard Backlight
Keyboard Backlight Sign of Life.
By default, the
Early Keyboard Backlight
option is enabled.
Table 42. BIOS Setup options—Virtualization menu 
Virtualization Support
Intel Virtualization Technology
Enable Intel Virtualization Technology (VT)
When enabled, the computer can run a Virtual Machine Monitor (VMM).
By default, the
Enable Intel Virtualization Technology (VT)
option is enabled.
VT for Direct I/O
Enable Intel VT for Direct I/O
When enabled, the computer can perform Virtualization Technology for Direct
I/O (VT-d). VT-d is an Intel method that provides virtualization for memory map
I/O.
By default, the
Enable Intel VT for Direct I/O
option is disabled.
Intel Trusted Execution Technology
(TXT)
Intel Trusted Execution Technology (TXT) is a set of hardware extensions to Intel
processors and chipsets. It provides a hardware-based root of trust to ensure
that a platform boots with a known good configuration of firmware, BIOS, virtual
machine monitor, and operating system. The following must be enabled in order
to enable Intel TXT -
●
Intel Virtualization Technology - X
●
Intel Virtualization Technology - Direct
By default, the
Intel Trusted Execution Technology (TXT)
option is disabled.
For additional security, Dell Technologies recommends keeping the
Intel Trusted
Execution Technology (TXT)
option enabled.
DMA Protection
Enable Pre-Boot DMA Support
Allows you to control the Pre-Boot DMA protection for both internal and external
ports. This option does not directly enable DMA protection in the operating
system.
NOTE:
This option is not available when the virtualization setting for IOMMU
is disabled (VT-d/AMD Vi).
BIOS Setup
99