 The requirements related with computer file system have been specified in "System Description Blu-ray Rewritable Disc Format part 2 File System Specifications version 1.0" (BDFS).Initially, the BD-RE version 1.0 (BDFS) was specifically developed for recording of digital broadcasts using the Blu-ray Disc application (BDAV application).But these requirements are superseded by the "Blu-ray Rewritable Disc File System Specifications version 2.0" (UDF) (a.k.a.