zmaint Since gparted doesn't 'see' the drive either, I can't format it. Already tried that.
Yes, I may end up going with your Plan B. Although with my age and eyesight, I don't know if I want to tackle installing a new drive myself. I'd have to look up the process for the Nitro 5; I do know there are models where the task isn't so difficult. A quick look a the case makes me suspect this may not be one of the easy ones, although I'd have to research what's involved to be sure. Anyway, if I can't do any better, I'll certainly try your suggestion. Have to save up for that, though.
Both for reasons of speed (I'm writing this on an ancient Dell which is having a hard time running Lubuntu), cost, and the fact I prefer to learn how to get around the obstacles I encounter because by the end of that process, I'm still hoping someone might know more about this issue.
Either way, I do appreciate the suggestion. It's one I might not have thought of myself. So far, it also sounds as if it may be the way I have to go.