Dell DX6012S User Manual download pdf (Page 41)

Using the System Setup Program and UEFI Boot Manager 45

Using the System Setup Program

and UEFI Boot Manager

The System Setup program is the BIOS program that enables you to manage

your system hardware and specify BIOS-level options. From the System Setup

program, you can:

• Change the NVRAM settings after you add or remove hardware

• View the system hardware configuration

• Enable or disable integrated devices

• Set performance and power management thresholds

• Manage system security

Choosing the System Boot Mode

The System Setup program also enables you to specify the boot mode for

installing your operating system:

• BIOS boot mode (the default) is the standard BIOS-level boot interface.

• Unified Extensible Firmware Interface (UEFI) boot mode is an enhanced

64-bit boot interface based on Unified Extensible Firmware Interface

(UEFI) specifications that overlays the system BIOS. See "Entering the

UEFI Boot Manager" on page 58 for more information on this interface.

You select the boot mode in the

Boot Mode field of the Boot Settings screen of

the System Setup program. See "Boot Settings Screen" on page 51. Once you

specify the boot mode, the system boots in that mode and you proceed then

to install your operating system from that mode. Thereafter, you must boot

the system to the same boot mode (BIOS or UEFI) to access the installed

operating system. Trying to boot the operating system from the other boot

mode causes the system to halt immediately at startup.

NOTE: Operating systems must be UEFI-compatible (for example, Microsoft

Windows Server

2008 x64 version) to be installed from the UEFI boot mode.

DOS and 32-bit operating systems do not support UEFI and can only be installed

from the BIOS boot mode.

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Dell DX6012S User Manual Page 41