BIOS IO Menu Selections
This section includes a searchable text-based representation and a
screenshot of the BIOS IO Menu. The options that are available from the IO Menu are
described in the table that follows.
Note -
PCIe slot 1 and Ethernet ports NET2 and NET3 are nonfunctional in single-processor
systems.
The following tables describe the BIOS IO menu options.
BIOS IO Menu PCI Subsystem Settings Options
The following table describes the BIOS IO Menu PCI Subsystem Settings
Options.
Table 36 BIOS IO Menu PCI Subsystem Settings Options
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PCI 64 Bit Resources Allocation
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Disabled/Enabled
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Enabled
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Enable or disable 64-bit capable devices to be decoded in
above 4G address space. This setting is available only if the
system supports 64-bit decoding.
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BIOS IO Menu IO Virtualization Options
The following table describes the BIOS IO Menu IO Virtualization Options.
Table 37 BIOS IO Menu IO Virtualization Options
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VT-d
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Disabled/Enabled
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Enabled
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Enable or disable Intel Virtualization Technology for directed
I/O (VT-d) by reporting the I/O device assignment to VMM through
DMA remapping reporting (DMAR) Advance Configuration Power
Interface (ACPI) tables.
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SR-IOV
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Disabled/Enabled
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Enabled
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Single Root I/O Virtualization (SR-IOV) is used to configure
devices into multiple virtual devices that can be used on
virtual OS installations. If supported by the hardware and set
to enabled, all devices within the system that are SR-IOV
capable are configured to support SR-IOV and I/O resources are
allocated to the device as normal. If set to disabled, I/O
resources are not allocated to the device.
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ARI
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Disabled/Enabled
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Enabled
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If Alternate Routing ID (ARI) is supported by the hardware and
set to enabled, devices are permitted to locate virtual
functions (VFs) in function numbers 8 to 255 of the captured bus
number, instead of normal function numbers 0 to 7.
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BIOS IO Menu I/OAT Configuration Options
The following table describes the BIOS IO Menu I/OAT Configuration Options.
Table 38 BIOS IO Menu I/OAT Configuration Options
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Intel I/OAT
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Disabled/Enabled
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Enabled
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Enable or disable Intel I/OATdevices.
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DCA Support
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Disabled/Enabled
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Enabled
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Enable or disable direct cache access (DCA) support.
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BIOS IO Menu Internal Devices Options
The following table describes the BIOS IO Internal Devices Options.
Table 39 BIOS IO Menu Internal Devices Options
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NET0
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Displays and provides options to change the internal device
settings.
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OpROM Enable
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Disabled/Enabled
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Enabled
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Enable or disable Option ROM. If set to enabled, Option ROM
for the card executes as normal. If set to disabled, Option ROM
for the card is not copied into memory and the execution of the
Option ROM is inhibited.
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NET1, NET2, and NET3
Note -
Ethernet ports NET2 and NET3 are nonfunctional in
single-processor systems.
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See NET0 description.
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BIOS IO Menu Add In Cards Options
The following table describes the BIOS IO Menu Add In Cards Options.
Table 40 BIOS IO Menu Add In Cards
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Slot 1
Note -
PCIe slot 1 is nonfunctional in single-processor
systems.
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Displays and provides options to change the settings of the
devices in PCIe slots.
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OpROM Enable
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Disable/Enabled
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Enabled
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Enable or disable Option ROM for add-in card.
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Slot 2, Slot 3, and Slot
4
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See Slot 1 description
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