Monitor BIOS POST Using a Serial Console

This procedure describes how to monitor the BIOS POST codes using the serial console port.

What To Do

  1. Attach a console directly to the serial port on the blade

  2. Power-cycle or reset the host

    The blade's green OK LED blinks slowly as BIOS POST executes. The POST output is sent directly to the blade's serial port.

  3. Monitor BIOS POST output from the serially-attached console

    When BIOS POST successfully completes and the host begins to boot, the blade's OK LED changes to steady green

If there is a fatal BIOS POST failure, the host will not boot and the blade's Service Action Required LED will light. See About Diagnostic Failures.

Related Topics