I'm interested in knowing why you're so determined to smite all the bytes on this drive?
What are you worried about? Got some corrupted bytes who you think are going to rise up at any minute and murder you in your sleep with the leftback from Newcastle down your throat?
Are you afraid some randomly disassociated bytes are going to reform themselves as the deleted pron pics and display them on your screen some day when your mother/gf/friend happens to walk in?
Are they communist bytes? Communism is just a red herring.
Is Elvis in there somewhere?
Are you afraid someone's going to read all those terrorist emails you sent then deleted?
Tell us. We're intrigued.