Maybe it still appears in /var/lib/dpkg/status? If it is, try deleting the entry from there.

I use openmediavault for my home NAS, it does all the heavy lifting for you with a nice GUI so you don’t have to config everything yourself. I’d recommend checking it if you don’t have a lot of experience with RAID setups or don’t want to do manually.

Just please remember that RAID is not a backup solution, it’s a redundancy solution. If you have data corruption on one side, it can copy itself to the other mirror and then you’re screwed. If your media is important, keep a proper separate backup.

Oh yeah, Time Commando. Had the demo as a kid and I played it so much, thought it was the best game ever. The demo was just some parts of the prehistoric and roman levels, I think. Then years later I suddenly remembered it and picked it up on sale from GOG, and oh boy, did this game age badly. The cutting edge graphics for its time are just plain ugly today, and the gameplay is boring. My advice to you is stick to your memories but don’t bother with the actual game.