Dell E05B001 Довідковий посібник - Сторінка 18

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Option

Description

Internal SD

When Redundancy is set to Disabled, either one of the SD card can be selected to present itself as

Primary Card

mass storage device by setting it to be primary card. By default primary SD card is selected to be SD Card

1. If SD Card 1 is not present, then the controller will select SD Card 2 to be primary SD card.

OS Watchdog

If your system stops responding, this watchdog timer aids in the recovery of your operating system.

Timer

When this option is set to Enabled, the operating system initializes the timer. When this option is set to

Disabled (default), the timer does not have any effect on the system. This option is set to Disabled by

default.

Empty Slot

Enables or disables the root ports of all the empty slots that are accessible to the BIOS and OS. This

Unhide

option is set to Disabled by default.

Memory Mapped

Enables or disables the support for the PCIe devices that need large amounts of memory. Enable this

I/O above 4 GB

option only for 64-bit operating systems. This option is set to Enabled by default.

Memory Mapped

When set to 12 TB, the system will map MMIO base to 12 TB. Enable this option for an OS that requires

I/O Base

44 bit PCIe addressing.

Mezzanine Slot

The Slot Disablement feature controls the configuration of mezzanine cards installed in the specified

Disablement

slots. Only mezzanine card slots that are present on your system are available for control.

Serial Communication

Use the Serial Communication screen to view the properties of the serial communication port.

Viewing Serial Communication

To view the Serial Communication screen, perform the following steps:

Steps

1. Power on or restart the system.

2. Press F2 immediately after you see the following message:

F2 = System Setup

NOTE:

If your operating system begins to load before you press F2, wait for the system to finish booting, and then

restart your system and try again.

3. On the System Setup Main Menu screen, click System BIOS.

4. On the System BIOS screen, click Serial Communication.

Serial Communication details

About this task

The Serial Communication screen details are explained as follows:

Option

Description

Serial

Selects serial communication devices (Serial Device 1 and Serial Device 2) in BIOS. BIOS console

Communication

redirection can also be enabled, and the port address can be specified. This option is set to Off by

default.

Enables the COM port or Console Redirection options.

Serial Port

Enables you to set the port address for serial devices. This field sets the serial port address to either

Address

COM1 or COM2 (COM1=0x3F8, COM2=0x2F8). This option is set to Serial Device 1=COM1 by default.

BIOS and UEFI

NOTE:

Setting Memory Mapped I/O Base to 512 GB requires less than 512 GB of physical memory

else the system might fail to POST.