HDINFO Program do display useful information about your system in one shot This tool was preliminary done to help knowing with a simple command if HiperDispatch® was active in a LPAR. In V1R5, new information has been added to the tool – you could get these information in different ways and different commands, but with HDINFO you have them in starting a single task or submitting a single JOB. HDINFO display some information only available in z/OS V2R3+.