compression help

Discussion in 'macOS' started by koopa35, Dec 19, 2008.

  1. koopa35 macrumors 6502

    Aug 7, 2008
    Los Angeles, CA
    hello all, i have seen dmg files 2.5gb and when opened it became 4gb. my question how is this done. another file i saw was cs3 master compressed into a small dmg then opened to a much larger one. does anyone know what app i can use to get these type of results.
  2. Str8edgepunker macrumors 6502

    Nov 4, 2001
    Philadelphia, PA
    Its the Disk Utility application in your Utilities folder.

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