Owners Manual

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.
● For the latest information about supported operating systems, go to Dell.com/ossupport.
Related concepts
Boot Settings on page 44
Related tasks
Boot Settings details on page 45
Viewing Boot Settings on page 44
Changing the boot order
About this task
You may have to change the boot order if you want to boot from a USB key or an optical drive. 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.
Related concepts
Boot Settings on page 44
Related tasks
Boot Settings details on page 45
Viewing Boot Settings on page 44
Network Settings
You can use the Network Settings screen to modify PXE device settings. The network settings option is available only in the
UEFI mode.
NOTE:
The BIOS does not control network settings in the BIOS mode. For the BIOS boot mode, the optional Boot ROM of
the network controllers handles the network settings.
Related concepts
UEFI iSCSI Settings on page 48
System BIOS on page 35
Related references
UEFI iSCSI Settings details on page 48
46
Pre-operating system management applications