Owners Manual

Option Description
embedded video will then be disabled right before the operating system boots. This option is set to
Enabled by default.
NOTE: When there are multiple add-in graphic cards installed in the system, the first card discovered
during PCI enumeration is selected as the primary video. You might have to re-arrange the cards in
the slots in order to control which card is the primary video.
Current State of
Embedded Video
Controller
Displays the current state of the embedded video controller. The Current State of Embedded Video
Controller option is a read-only field. If the Embedded Video Controller is the only display capability in the
system (that is, no add-in graphics card is installed), then the Embedded Video Controller is automatically
used as the primary display even if the Embedded Video Controller setting is set to Enabled.
SR-IOV Global
Enable
Enables or disables the BIOS configuration of Single Root I/O Virtualization (SR-IOV) devices. This option
is set to Disabled by default.
OS Watchdog
Timer
If your system stops responding, this watchdog timer aids in the recovery of your operating system. When
this option is set to Enabled, the operating system initializes the timer. When this option is set to
Disabled (the default), the timer does not have any effect on the system.
Memory Mapped
I/O above 4 GB
Enables or disables the support for the PCIe devices that require large amount of memory. Enable this
option only for 64-bit operating systems. This option is set to Enabled by default.
Memory Mapped
I/O above Base
When set to 12 TB, the system maps the MMIO base to 12 TB. Enable this option for an OS that requires
44 bit PCIe addressing. When set to 512 GB, the system maps the MMIO base to 512 GB, and reduces
the maximum support for memory to less than 512 GB. This option is set to 56 TB by default.
Slot Disablement Enables or disables the available PCIe slots on your system. The slot disablement feature controls the
configuration of the PCIe cards installed in the specified slot. Slots must be disabled only when the
installed peripheral card prevents booting into the operating system or causes delays in system startup. If
the slot is disabled,the Option ROM drivers are disabled. Only slots that are present on the system will be
available for control.
● Slot 1 — Enables or disables the PCIe slot 1. This option is set to Enabled by default.
● Slot 2 — Enables or disables or only the boot driver is disabled for the PCIe slot 2. This option is set
to Enabled by default.
● Slot 3 — Enables or disables or only the boot driver is disabled for the PCIe slot 3. This option is set
to Enabled by default.
● Slot 4 — Enables or disables or only the boot driver is disabled for the PCIe slot 4. This option is set
to Enabled by default.
● Slot 5 — Enables or disables or only the boot driver is disabled for the PCIe slot 5. This option is set
to Enabled by default.
● Slot 6 — Enables or disables or only the boot driver is disabled for the PCIe slot 6. This option is set
to Enabled by default.
Slot Bifurcation Allows Platform Default Bifurcation, Auto discovery of Bifurcation and Manual bifurcation
Control. The default is set to Platform Default Bifurcation. The slot bifurcation field is accessible
when set to Manual bifurcation Control and is grayed out when set to Platform Default Bifurcation
or Auto discovery of Bifurcation.
NOTE: Slot Bifurcation options vary depend on the Riser configurations.
● Slot 1 Bifurcation — X16 or X8 or X4 or X4X4X8 or X8X4X4 Bifurcation
● Slot 3 Bifurcation — X16 or X8 or X4 or X4X4X8 or X8X4X4 Bifurcation
● Slot 4 Bifurcation — X16 or X8 or X4 or X4X4X8 or X8X4X4 Bifurcation
● Slot 5 Bifurcation — X4 or X8 Bifurcation
● Slot 6 Bifurcation — X8 or X4 Bifurcation
Pre-operating system management applications 35