henry0 - 9:47 am on Apr 27, 2012 (gmt 0)
Rule of thumb:
Always rem HDD, crack it open, drill through, finish with heavy hammering.
Degaussing calls for heavy duty equipment and is not a true good panacea.
A good alternative is to immerse it in acid for a couple of days.
Plus keep in mind that way above what we can do in data recovery, the gov and real bad guys have the capability to grab data even from the most damaged HDD.