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How To change BIOS from UEFI to Legacy on HP GEN9 servers

Recently received a new batch of HP Proliant Gen9 servers and ran into an issue in being able to build the servers using Microsoft SCCM and PXE Boot. This was due to the UEFI boot settings being enabled on the servers and our PXE boot WIM was not UEFI aware. In our current environment this is not an option due to the support for older hardware and OS’s, so a work around was needed.

Note:  In this particular instance this was needed for Windows but if you are installing Linux (RHEL, CentOS, etc..) you will need to enable Legacy mode as only the latest releases will support UEFI.

In this post we will cover how to change the settings in the BIOS from UEFI to Legacy.

Power on the server and Select F9 on boot up to get to the BIOS. Once in select System Configuration

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Select BIOS/Platform Configuration

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Select System Options

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Select Network Boot Options

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Verify only one NIC is enabled then hit esc to back out to BIOS platform

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Next Select Embedded UEFI Shell

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Change Embedded UEFI Shell to Disabled

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Select Boot Options

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Select Boot Mode, hit enter to get rid of warning message

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Change Boot Mode to Legacy BIOS Mode and then reboot server for changes to take effect. You should now be in Legacy mode and able to PXE boot from legacy. Save settings, exit and restart.

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Now you should be able to press F12 and PXE will run in legacy mode.

5 Responses to “How To change BIOS from UEFI to Legacy on HP GEN9 servers”

  1. Didier Sierra says:

    Hi.

    How i can to enable Embedded NICs on Proliant dl360 G9?

    Failed to read embedded NIC status.
    This system may not have any embedded NICs installed.

    hpasmcli> SHOW server
    System : ProLiant DL360 Gen9
    Serial No. : MXQ60504FM
    ROM version : P89 07/20/2015
    iLo present : Yes
    Embedded NICs : UNKNOWN

    tanks

    regards

  2. Sadiq says:

    How To change BIOS from UEFI to Legacy on HP Proliant G6 server

    i am trying to upgrade storage 2TB to 18TB but i cannot access storage more then 2 TB

  3. Eugene Barasukana says:

    There is no “Network Boot Options ” in the menu “BIOS/Platform Configuration (RBSU)!

  4. Eugene Barasukana says:

    There is no “Network Boot Options” in “system Options” on my Proliant DL 380 Gen 9.

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