I had just mentioned that readers should research the algorithms that erase the data. Do you understand how a hard disk drive works?
On a hdd the reader head of the drive captures analog signals, prior to be DECODED. If you work out the exact DIGITAL signal and subtract it from the analog signal, you can ignore the last bit of information that was written. That makes sense, because that could mean you could enhance the remianing signal to see what had been written before.
This is why the methods that are used to securely erase data use an overwrite method. These are random numbers, generated with very complex algorithms that would take me a very large post to explain. Once these methods have overwritten the data, there is no way to recover especially now since they are huge number generators, making it impossible.
*shrugs* most platters are made of glass these days anyways...just tap it really hard against the wall...er something to shatter 'em...i've had a few plattes shatter on me while trying to remove them on a project i was working on...
Linear Mode
