Question: DVD Sizes, What is DVD-5, DVD-10, DVD-9, DVD-18 and Double Layer DVDs?
Double Layer (sometimes called Dual Layer) and Double-Sided DVDs each hold more than the standard 4.7GB of a single-sided single layer DVD. Many new DVD Burners for computers burn Double-Sided and Double (or Dual) Layer DVDs. Learn more about the different DVD sizes below.
Answer: There are four different DVD sizes:
DVD-5 holds 4.7GB and is supported by the DVD+R/RW and DVD-R/RW formats. It is also known as Single-Sided Single Layer.
DVD-10 holds 8.75GB and is supported by the DVD+R/RW and DVD-R/RW formats. It is also known as Double-Sided Single Layer.
DVD-9 holds 8.5GB and is supported by the DVD+R and DVD-R formats. It is also known as Single-Sided Double Layer (sometimes called Dual Layer). The official names are DVD-R DL and DVD+R DL
DVD-18 holds 15.9GB and is supported by the DVD+R format. It is also known as Double-Sided Double Layer (or Double-Sided Dual Layer).
You must have a DVD Burner for your PC that will burn Double Layer and/or Double-Sided DVDs to use these different discs.