What Is DVD-RW Drive? – POFTUT

What Is DVD-RW Drive?

DVD-RW is an optic disk technology and format which was very popular 15 years ago. It is mainly used large data which is about 4-5 GB in an optical medium which is the same size as a CD. In this tutorial, we will explain different DVD formats like DVD+R, DVD-R, DVD-RW, DVD+RW, DVD-RAM.


DVD or Digital Versatile Disc or Digital Video Disc is a digital optical disc storage format developed in 1996. DVD is created an extended version for a CD where DVDs can provide storage capacity starting from 4.7 GB to 17 GB. During time different formats created for DVDs like DVD+R, DVD-R, etc.

Capacity and nomenclature of (re)writable discs


DVD+R format is created for better compatibility for most of the DVD Players. It only supports write-once where later new data can not be added or changed.


DVD-R is one of the earliest formats of DVD. DVD-R is a write-once format where when some data is burned into the DVD there is no way to change or add new data to this DVD later.


DVD-RW is a more advanced version of the DVD-R where the data can be changes updated, added, and cleared completely. This is also called as rewriteable. What makes the DVD-RW format better than others are its advanced features with better compatibility. So the most popular format is the DVD-RW with rewritable features.


DVD+RW is created before DVD+R format. The plus “+” formats are better then the minus formats and provide faster writing, better internal linking, drag-and-drop files etc. The storage capacity is the same for both “+” and “-” formats.

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CD is the predecssor of the DVD and we can see following similarities and differencies if we compare DVD and CD.

  • CD storage size is about 700-800 MB where DVD storage size starts from 4.5 GB to 17 GB.
  • CD is older format with less speed where DVD is newer format with more speed.
  • CD is more compatible with computers then DVD as a older and more simple format.

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