On Mon, 2016-02-08 at 14:22 -0800, John R Pierce wrote:
the only truly safe way to destroy data on magnetic media is to grind the media up into filings or melt it down in a furnace.
I unscrew the casing, extract the disk platter(s), slide a very strong magnet over both sides of the platter surface then bend the platter in half.
How secure is that ?
I can't afford a machine that grinds everything into dust particles.