OH THANK GOD I ALMOST HAD A HEART ATTACK, my map fucked up and I thought I'd lost everything but luckily, I had a restore point from the 25th so I just need to alter what was added back in..
Damn, that's pretty surprising. I always thought that optical discs, while slow, bad for regular use and inconvenient, are the most secure for any backup. Never would have thought pendrives can outlive them