Acronym for Digital Versatile Disc.
(See DiskVsDisc)
Has 7 times as much storage capacity (4.7GB) as a CDROM. Now being used a lot more in the PC world as many computers come with DVD drives for reading or for read/write.
To play DVD movies, you need the DeCSS tool. Most distros do not include this because of legal threats from the media industry, so you need to download it separately.
21 pages link to DVD:
