A DVD-RW is a rewritable disc. This allows you to store data or videos with approximately 4.7 GB of space. However, some DVD-RW discs have a larger capacity. Once you burn the disc, you have the option to delete the information to add new files and programs. You can temporarily store information in this method. For example, if you need to transfer information to another computer or backup up a PC for upgrades, use a DVD-RW and save files. Then you can move the applications to another hard drive. Warnings Writer Bio
