A standard recordable and rewritable digital video disc (DVD-RW) holds up to 4.7GB of data. DVD-RWs can contain data, text, images, movies and all manner of digital content. A write protection option can be added to the DVD-RW after data has been recorded in order to avoid accidental overwriting or inadvertent or illegal copying of that data. Optical media emulation software such as Nero, Backup4all and Imgburn can, among other features, be used to add or remove write protection from most locked DVD-RWs. A few disc distributors use strong write protection for copyrighted materials that can be very difficult to break and is not legal, in any case. Nero and Backup4all have free trial versions and Imgburn is free. Optical media emulation software can also enhance data manipulation on DVD-RWs by allowing users to move, sort and create files and folders. Tips Warnings Writer Bio
