There is a lot of discussion about hard drives. For anything but national security data, simply overwriting them is going to be plenty if you want to donate them. I would just write a little batch file that formats the disk then takes some innocuous file like a movie and replicate it until I got a disk full message but there is a free utility.https://www.diskwipe.org/
That writes a pattern 3 times and would keep the spies out.
OTOH, these days most old drives are too small to be of much interest in a newer system. Get out your torx driver, take it apart and salvage the magnets, They are very cool. One use is for fishing wires. You can put one of these magnets on a piece of #10 solid and drop a piece of ball chain on your pull line, catch it with the magnet and you are good to go.
I cut the ear off this one (after this picture) and it will fit through a 1/2" KO.
As for the rest of the system, anything older than XP is not very useful on the web although people can use an XP laptop to scan codes on outboard (I am looking for one myself).
If you are not interested in anything but throwing it away and not worrying about your data, bash the drive with a big hammer. Hit it somewhere away from the hub or you won't be doing much. a 380 bullet just bounced off.