I have finally got round to dealing with my old PC. When looking up how to remove the hard drive I saw a lot of comments on the "hammer" solution to dealing with security. All were saying that it was unnecessarily drastic, the reasoning being that you can buy credit card details online for £10 so it wouldn't be sensible to go to much effort to recover a cleaned disk - unless it belonged to an international secret agent, and I have retired.
Instead of a hammer, a software cleansing program, such as DBAN, is advised. Has anybody any experience or view on this?