Before you install the operating system, ensure that Unified Extensible Firmware Interface (UEFI) settings support the type of installation you plan to perform.
For instructions on how to configure UEFI to support the installation, see Verify the UEFI Optimal Defaults.
For more information about changing boot properties, refer to Oracle X8 Series Servers Administration Guide at https://www.oracle.com/goto/x86admindiag/docs.