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DVD±R/W (also written as, DVD±R/RW, DVD±R/±RW, DVD+/-RW, DVD±R(W) and other arbitrary ways) handles all common writable disc types, but not DVD-RAM. [1] A drive that supports writing to all these disc types including DVD-RAM (but not necessarily including cartridges or 8cm diameter discs) is referred to as a "Multi" recorder.
All numbers in ISO 9660 file systems except the single byte value used for the GMT offset are unsigned numbers. As the length of a file's extent on disc is stored in a 32 bit value, [20] it allows for a maximum length of just over 4.2 GB (more precisely, one byte less than 4 GiB). It is possible to circumvent this limitation by using the multi ...
DVD-R DS (DS stand for Double Side) is also called DVD-10 (Dual Side, Single Layer) or DVD-18 (Dual Side, Dual Layer), it is a sub category of DVD-R. A DVD-R DS has a storage capacity of 8.75 GB (DVD-10) or 15.9 GB (DVD-18).
Although DVD was initially intended to prevent a format war in fact one did arise between these two formats. It was resolved with both surviving however: DVD-R predominating for stand-alone DVD recorders and players, and (for computers) most DVD devices being engineered as dual format, to be compatible with both.
DVD+R DL discs employ two recordable dye layers, each capable of storing nearly the 4.7 GB capacity of a single-layer disc, almost doubling the total disc capacity to 8.5 GB. Discs can be read in many DVD devices (older units are less compatible) and can only be created using DVD+R DL and Super Multi drives.
DVD-R DL (DL stands for Dual Layer [1]), also called DVD-R9, is a derivative of the DVD-R format standard. DVD-R DL discs hold 8.5 GB by utilizing two recordable dye layers, each capable of storing a little less than the 4.7 gigabyte (GB) of a single layer disc, almost doubling the total disc capacity. [2]
DVD-ROM and DVD-R(W) use one encoding, DVD-RAM and DVD+R(W) uses another: Capacity: 4.7 GB (single-sided, single-layer – common) 8.5 GB (single-sided, double-layer) 9.4 GB (double-sided, single-layer) 17.08 GB (double-sided, double-layer) Up to four layers are possible in a standard form DVD. Read mechanism: 650 nm laser, 10.5 Mbit/s (1×)
DVD capacity Diameter Disk Type Data sectors (2,048 B each) Capacity cm Bytes MB GB; 12 DVD-R, DVD-RW (SS-SL): 2,298,496: 4,707,319,808: 4489.250: 4.7 DVD+R, DVD+RW ...