Using progress codes

This section describes how to use progress codes.

Progress codes (or checkpoints) offer information about the stages involved in powering on and performing initial program load (IPL). Although progress codes do not always indicate an error, in some cases your server can pause indefinitely (hang) without displaying an 8-character reference code. Only when you experience such a hang condition should you take any action with respect to a progress code. When you look up a progress code, the information indicates the most appropriate action for that progress code.