what is the difference between dvd-rw and dvd+rw discs?
DVD-RW is a rewriteable format supported by the DVD Forum. It is compatible with most DVD-ROM drives and DVD-Video players. DVD+RW is also a rewriteable format, supported by the DVD+RW Alliance. ... On the other hand, the DVD+RW format has some special features, such as lossless linking, and both CAV and CLV writing.