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Oracle® Server X6-2 Installation Guide for Linux Operating Systems

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Updated: January 2017

Set the Boot Mode

The server UEFI firmware supports both Legacy Boot Mode and UEFI Boot Mode. Legacy Boot Mode is enabled by default . Because all supported Linux operating systems support both Legacy BIOS and UEFI, you have the option of setting the boot mode to either Legacy or UEFI before you perform the OS installation.

Note -  After you have installed the operating system, if you decide to switch Legacy to UEFI Boot Modes, you must reinstall the operating system.
  1. Reset or power on the server.

    For example, to reset the server, do one of the following:

    • 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.

    image:Graphic showing BIOS Screen.

    Note -  The next steps occur very quickly, so be ready to press the F2 key.
  2. When prompted in the BIOS screen, press the F2 key to access the BIOS Setup Utility.

    [Setup Selected] and the Boot Mode (Legacy or UEFI) are displayed at the bottom of the BIOS screen, then the BIOS Setup Utility appears.

  3. 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.

    image:BIOS Boot menu screen showing Legacy Boot Mode                                 selected.

    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.
  4. Use the down arrow key to select the UEFI/BIOS Boot Mode field, and then press Enter.
  5. Select your preferred boot mode, and then press Enter.

    You must select the boot mode before starting the operating system installation.

  6. To save changes and exit the BIOS Setup Utility, press the F10 key.

    Alternatively, you can select Save Changes and Exit from the Exit menu.