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CAUTION:
Switching the boot mode may prevent the system from booting if the operating system is not installed in
the same boot mode.
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 www.dell.com/ossupport.
Changing 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
On the System Setup Main Menu screen, click System BIOS > Boot Settings > UEFI/BIOS Boot Settings > UEFI/BIOS Boot
Sequence.
Click Boot Option Settings > BIOS > Boot Sequence.
Click Exit, and then click Yes to save the settings on exit.
Network Settings
You can use the Network Settings screen to modify UEFI PXE, iSCSI, and HTTP boot settings. The network settings option is available
only in the UEFI mode.
NOTE:
BIOS does not control network settings in the BIOS mode. For the BIOS boot mode, the option ROM of the
network controllers handles the network settings.
Viewing Network Settings
To view the Network Settings screen, perform the following steps:
Steps
Power on, or restart your system.
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.
On the System Setup Main Menu screen, click System BIOS.
On the System BIOS screen, click Network Settings.
Network Settings screen details
The Network Settings screen details are explained as follows:
About this task
Option
Description
UEFI PXE Settings
Options
PXE Device n (n =
1 to 4)
68
Pre-operating system management applications
Description
Enables or disables the device. When enabled, a UEFI PXE boot option is created for the
device.
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