This procedure describes how to monitor the BIOS POST codes using the serial console port.
Attach a console directly to the serial port on the blade
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.
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.