A No CD patch (also known as a "crack" or "fixed executable") is a small piece of software that modifies the game’s .exe file. In simple terms, it tricks the game into thinking the original DVD is in the drive when it is not.
Today, the only legitimate way to play the PC version is by purchasing an old physical DVD copy from a thrift store, eBay, or a collector. And that leads to a specific, annoying problem: fable 3 no cd patch free