If you have ever taken a hard drive apart, this is what it is suppose to look like.  Where I work we go through a lot of hard drives, and one of the tasks I have been given is to wipe the data from the drive, and then to destroy the ones that cannot be completely cleaned.  This is one that I opened to take what can be recycled out.   The drives that we are able to wipe are then sold to a computer recycle.

My girls have had fun helping me with the dead drives.  They have fun playing with the magnets and other parts you can remove from the drive.  Today they opened one of the hard drives, and we can see what a REALLY GOOD hard drive crash will do the platters.

Notice how the heads have completely ground off the top layer of the platters.  Compare this picture to the one above it, and you will see what I am talking about.  The crash was so bad, it turned part of the platters to dust.

That black stuff, is the surface of the drive that has been scrapped off.   I have probably taken apart over 100 drives, and have only seen two of them that have crashed this spectacularly.

Now don’t get me wrong, I don’t take all of them apart, some of them get used for target practice.  You can see what a .22 will do to a hard drive on a previous post that I have made.  http://biohazard-blog.blogspot.com/2009/06/plinking-ruger-10-22-death-of-hard.html.

So you will see what a 40 S&W bullet can do to a hard drive… 🙂   I have thought about taking them out with other things like sledge hammers, saws, freezing, welding, fire, etc.   I guess I will have to see what I can do when the weather warms up.