I actually got it figured out a couple hours after I posted. I always set up my PC drives as C:, D:, then the optical drive as Z:. When I had to reformat last month, I forgot to go into Disk Management and configure the drives how I like them. So yea, the batch file was trying to write to the optical drive. However, I still don't remember sorting ROM's being this difficult the last time I did it. Granted, it's been 10+ years the last time I did, but I don't remember having to go through so many steps.