SBIOS Settings

The NVIDIA DGX™ H100/H200 system comes with a system BIOS with optimized settings for the DGX system. There might be situations where the settings need to be changed, such as changes in the boot order, changes to enable PXE booting, or changes in the BMC network settings.

Instructions for these use cases are provided in this section.

Important

Do not change settings in the SBIOS other than those described in this or other DGX H100/H200 user documents. Contact NVIDIA Enterprise Services before making other changes.

Accessing the SBIOS Setup

Here is information about how you can access the SBIOS setup.

  1. Access the DGX H100/H200 console, either from a locally connected keyboard and mouse or through the BMC remote console.

  2. Reboot the DGX H100/H200.

  3. When presented with the SBIOS version screen, press the Del or F2 key to enter the BIOS Setup Utility.

    _images/access-sbios-setup.png

Here are some occasions where it might be necessary to reconfigure settings in the SBIOS:

  • Configuring a BMC Static IP Address Using the System BIOS

  • Enabling the TPM and Preventing the BIOS from Sending Block SID Requests

  • Clearing the TPM

Configuring the Boot Order

The following instructions describe how to set the boot order at boot time. You can also set the boot order from the SBIOS setup > Boot screen.

  1. Access the DGX H100/H200 console, either from a locally connected keyboard and mouse or through the BMC remote console.

  2. Reboot the DGX H100/H200.

  3. Press the F11 key at the NVIDIA splash screen.

    _images/nv-splash-screen.png

  4. Select the boot device.

The following figure shows virtual media selected.

_images/select-boot-device.png

Configuring the Local Terminal

There are two ways to access the BIOS setup screen:

  • A direct-attached keyboard and monitor

  • Serial-over-LAN (SOL) using SSH or IPMItool

To use the SOL connection, you might need to configure your terminal application.

Linux

  1. Set the locale and language for your terminal:

    sudo localectl set-locale LANG=en_US.UTF-8

  2. Set the locale for the current session:

    export LANG=en_UTF-8

  3. Type xterm to launch the terminal with the set locale.

Windows and MacOS

  • Configure your terminal application for en_US.UTF-8 support.

Power on or Reboot the System

  1. Reboot the system using one of the following methods:

    • Connect to the BMC web interface and click power on/reboot.

    • From an operating system command line, run sudo reboot.

  2. Connect to the DGX H100/H200 SOL console:

    • Using SSH

      1. Create a new user using the BMC Web UI, for example, userA.

      2. Enable the solssh service on the Services page of the Web UI.

      3. Restart the SSH service and log in as the new user created in step A.

        For example,

        ssh userA@10.33.128.52

    • Using IPMItool

      ipmitool -I lanplus -H <ip-address> -U admin -P dgxluna.admin sol activate

  3. Press the Del or F2 key when the system is booting.

    The system confirms your choice and shows the BIOS configuration screen.