I have an HP computer that came with a 512 GB SSD and a 2 TB SATA drive.I had a couple SATA drives hanging around so put one in the box,And got a HD caddy for the second SATA drive.I use that one for backups mostly IL-2 stuff.and mods for games..Now I've picked up a 2 TB drive I's like to put in the case for games.And keep the one TB drives out and use the caddy..If I change the drive letter on my backups drive will that mess things up..The one I have in the machine I'll take out and rename it to E: and just copy the few things over to the larger drive..Right now the one inside the machine had my Steam install on it..and Steam takes u a lot of real estate
Hope this makes sense and thank you for any help.Been a long time since I've swapped drives around


Russ
Semper Fi