So I am now finally selling my Freeagent External HDD to fund a larger internal HDD. I formatted it once to get rid of all the ISOs and movies I kept on it then used Eraser to clean up the unused space to try and get rid of the trace (that is how it works right?). But I decided to choose the option that cleans it over once as opposed to the one where it cleans it over 35 times. Is that still enough or is there programs that can still pull out the data? Keep in mind that I'm putting it on ebay so chances are the buyer isn't a super L33T HAXXOR but it can't hurt to think about these things.