Option
Description
Internal microSD
Primary Card
When
Redundancy
is set to
Disabled
, either one of the MicroSD card can be selected to present itself as mass
storage device by setting it to be primary card. By default primary MicroSD card is selected to be SD Card 1. If
MicroSD Card 1 is not present, then the controller will select MicroSD Card 2 to be the primary MicroSD card.
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 need large amounts 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 will map MMIO base to 12 TB. Enable this option for an OS that requires 44 bit
PCIe addressing. When set to
512 GB
, the system will map MMIO base to 512 GB, and reduce the maximum
support for memory to less than 512 GB. Enable this option only for the 4 GPU DGMA issue. 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, both the
Option ROM and UEFI drivers are disabled. Only slots that are present on the system will be available for control.
Table 35. Slot Disablement
Option
Description
Slot 1
Enables or disables or only the boot driver is disabled
for 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 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
.
Table 36. Slot Bifurcation
Option
Description
Auto Discovery Bifurcation Settings
Platform Default Bifurcation , Auto Bifurcation, and
Manual bifurcation
Slot 1 Bifurcation
x4 or x8 Bifurcation
Slot 2 Bifurcation
x16 or x4 or x8 or x4x4x8 or x8x4x4 Bifurcation
Slot 3 Bifurcation
x16 or x4 or x8 or x4x4x8 or x8x4x4 Bifurcation
Pre-operating system management applications
49
