[E=MC2]

I've never done this before, but the best way I can think of too scrub a hard drive forever is to expose it to a bearing heater for several minutes.

It is amazing what they can recover even from a warped drive.

[NOBAMA in 08]

Then beat the warped drive to a pulp with a sledge hammer!

[wastedyears]

How about a hard drive that you evilly drop in beer?

[JamesP81]

It is amazing what they can recover even from a warped drive.

I think you misunderstand. A bearing heater is a tool used in machine shops to heat bearings. It doesn't work by burning gas or with an electrical heating element. Heat is generated when the atoms in a metal are moving a lot. A bearing heater causes the atoms in a bearing to move quickly (thus heating the bearing) by exposing it to an *extremely* powerful oscillating electromagnetic field.

This oscillating magnetic field would scramble the disk platters faster than you could say s**t. Exposing the disk for several minutes would make data recovery hopeless.