I have replaced my OS drive as my primary failed on me a couple of weeks ago. See thread below: https://www.techspot.com/vb/topic127859.html To no avail, no low level work was able to recover this drive or the data on it. Not really a big deal. However, I am sending this drive back to WD under warranty and I am a little concerned about private data will be retrieved in some fashion when back at the warehouse. I have tried to format, remove the partition...anything but every option fails with a error message similar to "This drive have malfunctioned and format could not be completed"... Should I be concerned about sending this drive back with data on the platters? Is there anything mechanical I can do to drop the data or should I not even worry about it? Benjamin.