Storage disks are full of files but cannot access any of them
I recently upgraded my PC and I changed basically everything besides my ram, HDD, and SSD. I added another SSD disk (C drive) to my pc, so in total I have 2 SSDs both 1TB, and 1 200gb HDD. The issue I’m facing is that my old SSD (D drive) and my HDD (E drive) are both full of the old files that I had from my PC before upgrading, including games, etc., yet I can’t access them whenever I go to search on windows.
I moved my old D drive files to my new C drive and it showed to be successfully done, however, I still can’t access most of the games that I had on my old drive.
I was honestly thinking of reformatting my PC so that I can just delete everything and redownload anything when needed cause it’s really annoying having all of my drives full of files that I can’t even access easily.
I was told that maybe the windows system was installed in my new storage disk rather than just adding my new SSD as an extra source of storage which wasn’t something I knew at the time I was at the shop, otherwise I would have told them not to do that.
Is there any fix for this issue that I can do at home and that won’t take super long cus I just want to use my new PC normally without having to waste so much time trying things that won’t work. I also must mention that the PC shop is 30 minutes away so it’s not something I can just go to casually.