The amount of information that can be written is determined by the disc’s recording capacity as well as the physical and logical formats used.Īll writable DVD formats devote the same amount of usable space to data (2,048 bytes per sector). Writable DVD discs can either be single (SS 4.7 GB) or double-sided (DS 9.4 GB) or double-sided double-layer ~17 GB (rare) Note: usable space may in fact be smaller ie around 4.27GB, due to sectors and disc formatting Generally, writable DVD discs come in 12cm (120 mm) and 8cm (80 mm) diameter sizes.
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