I currently own a 2 TB my book world edition II, the NAS version. Unfortunately with numerous lockups, crashes, slow speed, I am going to return it. However, I have used the drives for a few weeks and made the mistake of copying very important financial and private data on them when creating my backups. There is no way in hell I am giving them back in this condition, at the wrong hands, they can destroy my credit and identity. That being said, I want to zero fill them (ideally, I'd like to use a pattern zero fill software with multiple runs) and return them back to factory firmware. How can I achieve this? If I unplug the drives and connect them to my PC and run format software on them, I will loose the O/S, will the drive boot itself? I heard linux has a dd command, would that do what I want? If so, can someone show me how (I'm not a linux guru)?
I dont want to zero fill the drives and send them back in a non working condition, but if there is no other way, I will. I won't take any chances, god knows what WD does with returned hard drives.