Yes, I was using this hard drive for a separate project and I set the partition to FAT. I'll see if I can change it, but if it doesn't work I'll do what you suggested.
Edit: It worked, it is now creating ISO's rather than splitting files. Thank you.
It also creates an i00 and an i01 file but I'm not sure what those do. The .mds is 9 kb, however the other files are quite large. I will send a screenshot.
So I've been burning off Roms to play on my PS2 but for some reason ImgBurn isn't creating an ISO file, it only creates the .mds file. How do I get the ISO and what do I do with the .mds file?