I am extremely new to linux/raspberry/retropie. I have been able to get a triple boot of Reto/OpenEl/Raspian up and running. I transferred roms via the USB stick method and all was well. I was having a hard time editing my config.txt to have my Pi output to composite only and after an hour or so, said screw it and just did a fresh install. I had everything working correctly and was about to transfer roms again and noticed on my windows machine I could see Retropie folder, one of them being the roms folder. So I just shot all of my roms over via that method. Now when I try to leave Retropie to go to Raspian or Open it tells me I don’t have permission.

Did copying over files that way mess up my folder permissions? Everything was working up to that point.

Thanks for helping a noob.