Users Guide

Choosing the system boot mode

System Setup enables you to specify one of the following boot modes for installing your operating

system:

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

NOTE: Dell Storage NAS supports only BIOS mode. You must not change the boot mode to UEFI

because the system does not boot.

• Unified Extensible Firmware Interface (UEFI) boot mode is an enhanced 64-bit boot interface. If you

have configured your system to boot to UEFI mode, it replaces the system BIOS.

1. From the System Setup Main Menu, click Boot Settings, and select Boot Mode.

2. Select the boot mode you want the system to boot into.

CAUTION: Switching the boot mode may prevent the system from booting if the operating

system is not installed in the same boot mode.

3. After the system boots in the specified boot mode, proceed to install your operating system from

that mode.

NOTE: Operating systems must be UEFI-compatible 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.

NOTE: For the latest information about supported operating systems, go to Dell.com/ossupport.

Entering System Setup

1. Turn on, or restart your system.

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

F2 = System Setup

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.

Responding to error messages

If an error message is displayed while the system is booting, make a note of the message. For more

information, see System Error Messages.

NOTE: After installing a memory upgrade, it is normal for your system to display a message the first

time you start your system.

Using the system setup navigation keys

Table 12. Using the system setup navigation keys

Keys Action

Up arrow Moves to the previous field.

Down arrow Moves to the next field.