Additionally, you can install any other supported operating system or virtual machine software on your server. See the latest version of the Sun Server X4-2 Product Notes at http://www.oracle.com/goto/X4-2/docs. You can also view the list of supported operating systems at http://wikis.oracle.com/display/SystemsComm/Sun+Server+X4-2+-+Operating+Systems.
Note - If the Oracle Linux 6.x OS was preinstalled, it was installed with the server set to Legacy BIOS. If you choose to boot the server in UEFI BIOS Boot Mode, the preinstalled image is not accessible. Therefore, if you want to use the Oracle Linux 6.x OS with the UEFI/ BIOS Boot Mode set to UEFI BIOS, you must perform a fresh installation of Oracle Linux 6.x.