Server is in POST while setting one-time boot option

Symptom

Server displays as "POST in progress, EV unavailable."

Cause

You can set the one-time boot option for a server while it is powered on but not while the server is running its POST (power-on self-test).

Action
  1. Power off the server.
  2. Set the one-time boot option.
  3. Power on the server.
  4. To verify the boot status of the server, check the server console.