Dell DR4300 System Owner's Manual page 31

Option Description
hard drive in the list is attempted to boot. When this option is set to Enabled, all hard drives are attempted to
boot in the order selected in the Hard-Disk Drive Sequence. This option is not enabled for UEFI Boot Mode.
Boot Option Configures the boot sequence and the boot devices.
Settings
BIOS Boot Enables or disables BIOS boot options.
Settings
UEFI Boot Enables or disables UEFI Boot options. The Boot options include IPv4 PXE and IPv6 PXE. This option is set to
Settings IPv4 by default.
Related tasks
Viewing Boot Settings
Changing the boot order
Related reference
Boot Settings
Choosing the system boot mode
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.
• 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.
Related tasks
Boot Settings details
Viewing Boot Settings
Related reference
Boot Settings
Changing the boot order
You may have to change the boot order if you want to boot from a USB key. The following instructions may vary if you have selected
BIOS for Boot Mode.
Steps
1. On the System Setup Main Menu screen, click System BIOS > Boot Settings.
2. Click Boot Option Settings > Boot Sequence.
3. Use the arrow keys to select a boot device, and use the plus (+) and minus (-) sign keys to move the device down or up in the order.
4. Click Exit, and then click Yes to save the settings on exit.
NOTE: This option is enabled only if the boot mode is BIOS.
NOTE: This option is enabled only if the boot mode is UEFI.
Pre-operating system management applications 31