3. After the system boots in the specified boot mode, proceed to install your operating system fromthat mode.NOTE: Operating systems must be UEFI-compatible to be installed from the UEFI boot mode. DOSand 32-bit operating systems do not support UEFI and can only be installed from the BIOS bootmode.NOTE: For the latest information about supported operating systems, go to Dell.com/ossupport.Related LinksBoot SettingsBoot Settings detailsViewing Boot SettingsChanging the boot orderYou may have to change the boot order if you want to boot from a USB key or an optical drive. Thefollowing instructions may vary if you have selected BIOS for Boot Mode.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 thedevice down or up in the order.4. Click Exit, and then click Yes to save the settings on exit.Related LinksBoot SettingsBoot Settings detailsViewing Boot SettingsNetwork SettingsYou can use the Network Settings screen to modify PXE device settings. The network settings option isavailable only in the UEFI mode.NOTE: The BIOS does not control network settings in the BIOS mode. For the BIOS boot mode, theoptional Boot ROM of the network controllers handles the network settings.Related LinksUEFI iSCSI SettingsNetwork Settings screen detailsUEFI iSCSI Settings detailsSystem BIOSViewing Network SettingsViewing UEFI iSCSI SettingsViewing Network SettingsTo view the Network Settings screen, perform the following steps:1. Turn on, or restart your system.2. Press F2 immediately after you see the following message:F2 = System SetupNOTE: If your operating system begins to load before you press F2, wait for the system to finishbooting, and then restart your system and try again.52
