Every drive I have does have some THING on it. But, the "books" of optical disks still has some empty pockets in it! And, the BluRay disks are the 25 gig variety. I use them for everything permanent. I have read there are 50 gig and even 100 gig disks. Cool. Walmart don't sell those though. The big thing is that I have zero spinner hard drives in use now. I still have like a dozen of them and they do start up. But they are empty. Some of them emptied themselves, sadly. The nice thing is, like you, I didn't lose anything except my most recent "volatile" stuff, like what we are typing to each other. But the FILES? They go on a onboard SSD first, then a removable SSD in the dock, then on to BD disks and into the disk books. Sound familiar? I had to deal with my first (and only) 1 terabyte WD Caviar Black spinner drive simply disappearing everything on it, and then the tools found nothing at all wrong with the drive. IT is supposedly in perfect health. I removed it anyway. And, in a test box, it did the same thing again, for no reason whatsoever. Nothing was recoverable according to all the tools I tried. Ok, so that was when I bought my first SSD. In 2012. And THAT little 460 gig drive? It still has Win 7 on it, and still working fine. Not being USED though it is installed in Bad Moon RYZEN. I will remove and store it, intact, for the Kitchen rig. :o) It isn't like I don't have enough SSD's to do that now. HA!
Oh, I also lost my 480 gig Caviar Black BOOT drive a few years ago. It lasted to end of warranty plus one month. That one dying was no big deal, as I just simply activated the Win 7 Pro 64 bit installation on the 460 gig SSD. No problemo! But that one terabyte drive? It had all my entire 800 gig RUNTIME on it. I cried about that one. I never lost any of the original zip files and stuff. But, I DID lose all my INSTALLED stuff and the set up, posed, worked over FIGURES and scenes I had saved. That made up some 2/3 of the runtime content!
Nuff said, I back that stuff up, as saved!