I've been using an old OS as my daily driver for five years now[1]. You absolutely can do it, but it's a lot of work! 1: https://mavericksforever.com/ https://

I've been using an old OS as my daily driver for five years now[1]. You absolutely can do it, but it's a lot of work! 1: https://mavericksforever.com/ https://mavericksforever.com/