On 02/08/2016 06:38 PM, Always Learning wrote: > > 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. > I have a sledge hammer. It's good exercise and fun. -- -- Steve