On the face of DVD media, it should have a 4.7 GB capacity, but it looks like it has less than 4.7 GB on a PC?
Generally DVD calls as: 1 KB = 1000 Bytes, 1 MB = 1000 KB, 1 GB = 1000 MB Computer calls as: 1 KB = 1024 Bytes, 1 MB = 1024 KB, 1 GB = 1024 MB Therefore, with a PC, 4.7 GB = 4,7000,000,000 Bytes / 1,024 = 4,589,843 KB 4,589,843 KB / 1,024 = 4,482 MB 4,482 MB / 1,024 = 4,376 GB Which is nearly equal, 4.38 GB (a capacity shown will depend on the software) Both of them has quite same capacity but each of them has different unit, 1000 or 1024. This will lead each has this different size view.
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