This International Standard specifies the HD-BURN format applied to CD-R/RW discs. The HD-BURN system is capable of recording the information in double density compared to the conventional CD-R/RW disc. It enables the realization of products with high reliability, high speed and interchangeability, and is especially suitable for consumer applications with high cost-performance. This document describes: – the physical characteristics for the recording and playback; – the track structure of a disc, – the data structure in the track; – logical format structure.