So I own 2 disk systems. One is an early model. Let’s call it Drive A. I can write with drive A. The other is a later model (Drive B). Both are unmodified. Both work great. They read and play every game that I own with no issues. My questions are, if they both play the same games, then why when I write a disk with Drive A, Drive B can’t read it? Do I need to calibrate Drive A? Do I need to calibrate both? Is it even possible to calibrate the writing drive to work with other disk drives? Does anybody have any advice?

Thanks in advance