Status of the CMS HCAL and Performance on the First Beam at the LHC

We present the current status of the CMS Hadron Calorimeter (HCAL) performance in preparation for the Large Hadron Collider (LHC) operations at CERN. The CMS HCAL is being commissioned in the underground cavern using cosmic rays together with magnet to test installation procedure and to commissioning of hardware and software, including DAQ and online monitoring system. We also present the performance of the CMS HCAL in the first LHC beams.