Remove hard disc
Hit (several times) with a big hammer
Might as well smear it in orange jelly, it’ll be about as secure as that approach[/quote]
If we were talking about a hard drive that was being sought by NSA/Mi6/Spectre (*delete as appropriate) Agents and which contained the lauch codes for Balistic Nuclear Missiles then yes, i’d agree, a hammer ‘might’ not be enough.
However, in reality, as soon as the drive is rendered non working with a hammer, the chances some one will attempt to reconstruct the data on the remains of the platters is tiny, as it is a massive PITA to do.
A few good hits with the hammer, make sure the casing is proper bent so the platters inside are bent too and take it to your local tip that has an electronics recycling capability!