Overwriting Hard Drive Data: The Great Wiping Controversy

Often we hear controversial opinions in digital forensics on the required or desired number of passes to utilize for properly overwriting, sometimes referred to as wiping or erasing, a modern hard drive.

One of the chief controversies is that if a head positioning system is not exact enough, new data written to a drive may not be written back to the precise location of the original data. This paper demonstrates that the controversy surrounding this topic is unfounded.