Pre-operating system managementapplications 27Option DescriptionNOTE: This option is enabled only if the boot mode is UEFI.Related linksBoot SettingsViewing Boot SettingsChoosingthesystembootmodeChangingthebootorderChoosingthesystembootmodeSystem 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 anenhanced 64-bit boot interface. If youhave configured your system toboot to UEFI mode, it replaces thesystem BIOS.1 FromtheSystemSetupMain Menu, clickBoot 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 thesame 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 systemsdo 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 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. The following instructions may vary if youhave 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 the device 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 NetworkSettingsscreen to modifyPXE device settings.The network settings optionisavailableonlyintheUEFI mode.NOTE: The BIOSdoesnotcontrolnetworksettingsinthe BIOSmode. Forthe BIOSbootmode, theoptional Boot ROMofthenetwork controllers handles the network settings.
