I wasn't feeling confident enough to rebuild my degraded RAID 10 array (lost one of my four 2TB drive) so I decided to remake the array from scratch (using Webmin, a web based administration GUI for Ubuntu server). All was going well until it came time to create a file system when what I assume is some sort of issue due to previous configuration halted the process. Something to do with the GPT headers.

I think the best thing to do is to try and restore the drives to their default state and get rid of any trash data that might be screwing the process over.

Question time: can anyone suggest the best way for me to blank these 4 Seagate HDD's so I can throw on GPT partition tables and recreate my RAID array?