Set the Boot Mode

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The server is equipped with Unified Extensible Firmware Interface (UEFI), which supports both Legacy BIOS and UEFI boot modes. Legacy BIOS Boot Mode is enabled by default. Because the Windows Server 2012 R2 operating system supports both Legacy BIOS and UEFI, you have the option of setting the boot mode to either Legacy BIOS or UEFI before you perform the OS installation.

Note - After you have the installed the Windows Server operating system, if you decide you want to switch from Legacy BIOS boot mode to UEFI boot mode, or vice versa, you must remove all partitions and reinstall the operating system.

Reset or power on the server.
For example, do one of the following to reset the server:
- From the local server, press the Power button on the front panel of the server for approximately 1 second to turn the server off, then press the Power button again to power on the server.
- From the Oracle ILOM web interface, click Host Management → Power Control , select Reset from the Select Action list box, then click Save.
- From the Oracle ILOM CLI, , type: reset /System
The server begins the boot process and the BIOS screen appears.

Note - The next events occur very quickly; therefore, be ready to press the F2 key. Watch carefully for messages as they appear on the screen for a brief time. You might want to enlarge the size of your screen to eliminate scroll bars.

When prompted in the BIOS screen, press the F2 key to access the BIOS Setup Utility.
After a few moments, the BIOS Setup Utility appears.

In the BIOS Setup Utility, use the arrow keys to navigate to the Boot menu.
The Boot menu screen appears. The UEFI/BIOS Boot Mode field displays the current boot mode.

Note - The options in the boot order list differ depending on the storage drive configuration and whether you have enabled the Persistent Boot Support feature. For more information about Persistent Boot Support, refer to the Oracle X6 Series Servers Administration Guide at http://www.oracle.com/goto/x86admindiag/docs.

Use the down arrow key to select the UEFI/BIOS Boot Mode field, and then press Enter.

Select your preferred boot mode, and then press Enter.
You must select the boot mode, Legacy or UEFI, before starting the operating system installation.

To save changes and exit the BIOS Setup Utility, press the F10 key.
Alternately, you can select Save and Exit from the Exit Menu.