DVD capacity

Discussion in 'General Mac Discussion' started by TyWahn, Nov 9, 2003.

  1. macrumors 6502

    Joined:
    Oct 25, 2003
    #1
    Can somebody please explain how a
    4.7 GB DVD-R turns into 4.28 GB when ready to burn?
     
  2. 7on
    macrumors 601

    7on

    Joined:
    Nov 9, 2003
    Location:
    Dress Rosa
    #2
    Volume information. If you use, I believe, Disk Utility or Toast I believe you can get more (4.4 with Toast). Same way my 60GB harddrive is only 55.6GB in capacity.
     
  3. macrumors regular

    Joined:
    Jul 16, 2002
    Location:
    Sydney
    #3
    Probably also something to do with the way "megabyte" and "gigabyte" are defined.

    4.7GB assumes 1000^3 and 4.3GB assumes 1024^3, is my guess.
     
  4. macrumors 65816

    krimson

    Joined:
    Oct 29, 2003
    Location:
    Democratic People's Republic of Kalifornia
    #4
    Quoted from www.dvdrhelp.com

    DVD-5
    DVD-5 is a single sided single layer DVD that stores up to about 4 707 000 000 bytes and that is 4.38 GigaBytes where 1 kilobyte is 1024 bytes(4 707 000 000B / 1024 = about 4 596 679KB / 1024 = about 4489MB / 1024 = about 4.38GB) . Video DVD, DVD-R/W and DVD+R/W supports this format. Often referred to as "single sided, single layer".
     

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