Dell OptiPlex Micro 7020 Owners Manual - Page 93

Table 37. System setup options-Pre-boot Behavior menu, Prompt on Warnings and Errors

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Table 37. System setup options-Pre-boot Behavior menu Pre-boot Behavior Adapter Warnings Enable Adapter Warnings Enables the warning messages during boot when the adapters with less power capacity are detected. By default, the ON option is enabled. Warning and Errors Enables or disables the action to be taken when a warning or error is encountered. 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. Table 38. System setup options-Virtualization menu Virtualization Intel Virtualization Technology Enable Intel Virtualization Technology (VT) When enabled, the computer can run a Virtual Machine Monitor (VMM). By default, the ON 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 ON option is enabled. Intel® Trusted Execution Technology (TXT) Enable 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 OFF option is enabled. For additional security, Dell Technologies recommends enabling the Intel Trusted Execution Technology (TXT) feature. 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). By default, the ON option is enabled. For additional security, Dell Technologies recommends keeping the Enable Pre-Boot DMA Support option enabled. NOTE: This option is provided only for compatibility purposes, since some older hardware is not DMA capable. BIOS Setup 93

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Table 37. System setup options—Pre-boot Behavior menu 
Pre-boot Behavior
Adapter Warnings
Enable Adapter Warnings
Enables the warning messages during boot when the adapters with less power
capacity are detected.
By default, the
ON
option is enabled.
Warning and Errors
Enables or disables the action to be taken when a warning or error is
encountered.
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.
Table 38. System setup options—Virtualization menu 
Virtualization
Intel Virtualization Technology
Enable Intel Virtualization Technology
(VT)
When enabled, the computer can run a Virtual Machine Monitor (VMM).
By default, the
ON
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
ON
option is enabled.
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
Enable Intel Trusted Execution
Technology (TXT)
By default, the
OFF
option is enabled.
For additional security, Dell Technologies recommends enabling the
Intel
Trusted Execution Technology (TXT)
feature.
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).
By default, the
ON
option is enabled.
For additional security, Dell Technologies recommends keeping the
Enable
Pre-Boot DMA Support
option enabled.
NOTE:
This option is provided only for compatibility purposes, since some
older hardware is not DMA capable.
BIOS Setup
93