Yes, Black Sabbath ( Tony Iommi, Geezer Butler and Bill Ward) fired Osbourne in 1979 over his substance abuse and an overall disinterest in doing anything with the band. They replace Ozzy with Ronnie James Dio, ushering in the "Heaven and Hell" era—and the longstanding rumor that Ozzy held a grudge against Dio. But is that true?

Tony Iommi, Terence “Geezer” Butler and Bill Ward remembered the iconic frontman with touching tributes following his death on July 22