This is the new file system used on some CD-ROMs and DVDs. Say Y if you intend to mount DVD discs or CDRW's written in packet mode, or if written to by other UDF utilities, such as DirectCD. Please read <file:Documentation/filesystems/udf.txt>. To compile this file system support as a module, choose M here: the module will be called udf. If unsure, say N.