SSSL (Single Sided, Single Layer) disc and DVD5 (D5 for short)

DVD and CD are almost the same on surface, but they are difference inside. Assembled by single side/double side and single layer/double layer, DVD can be divided in to four basic physical structures: single side single layer, single side double layers, double-side, single-layer, double-side double layers. Single-sided DVD disc may have one or two recording layer. Like with the CD, CD-ROM laser from reading the following data on a single disc, double-sided DVD, the data were stored in the disc up and down both sides.

This refers to the common single-sided single-layer DVD discs, with a total capacity of 4.7GB, can store 133 minutes of video data.
Single-sided single-layer DVD disc is a blank substrate and a data recording layer of the substrate bonding layer formed. Both single-layer disc or a dual-layer disc by bonding two substrates made of the thickness of the substrate per tablet are 0.6mm, so DVD disc thickness 1.2mm.

Common problems related to partition recovery and our solutions: