Thank you for your reply, diane; it was most helpful.
I read your link, further studied, and am now following the common sense 'safety precautions'
I noticed today, that the system has removed three out of five of my saved games, which is a relief. Its good to know that dropping a game unintentionally is not a life sentence, and that MissManners will not be always admonishing me me: She's a bit scary, you know!