The entre surface of the drive needs to be written over at least 7 times and I've heard 20+ is the FBI baseline. Yikes......!!!!!! If you're trying to get rid of all that porn you'll need to yell, "pull" and then hit that HD head on with 3 1/2" 12 ga mag filled with #4 steel.
Noli Nothis Permittere Te Terere!!
EVGA 680i, Dual EVGA 8800GT'S (650/950), 4 gigs OCZ DDR2 1066, Intel Q9450 at 3.8 Ghz, Koolance Water Cooled, Dual Plextor16x DL DVD+/-RW. Dual WD 250gb 16mb Cache Sata 3.0. 3DMark06 score = 19,168.