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I don't know why anyone resorts to multiple zero passes anyway. Just fill up the drive with large video files or whatever other nonsense you have on the computer and then trash it normally. Go ahead and recover the files. Look as carefully as you want to, you'll find nothing.





The Gutmann method starts with four random overwrites - this just to 'shuffle the cards' a bit. After these follow twenty seven (27) calculated steps which target all the hard drive types in the world - and here Peter has combined algorithms, 'killing two or more birds with one stone' so to speak, to keep the number of steps down to twenty-seven.

The agenda for what needs to be done within these twenty-seven steps is fairly straightforward, but to keep one step ahead of the oppostion, their exact order must be randomised and fully obfuscated - and the method used to randomise their order must also be obfuscated.

After these twenty-seven steps are completed, four final random overwrites follow.