After a whole day spent fighting this problem of sigpatches (nobody had them complete) I managed to solve it with this thread.
Thank you all very much, I am new to this community and I really appreciate your work.
I managed to reinstall and fix many corrupted games with no problem.
Tested on...
@Xdqwerty I remember getting a Genesis for Xmas, when I was your age, 13-14. Some cool games and good memories. Metal Gear, and Sonic were the games I played the most on it.