Can your model upgrade to at least Mountain Lion?
I can understand that it might not -- I have a much-beloved old 2007 white 13" MacBook that will only go as far as Lion (it's currently at a release before that, Snow Leopard). Like some of the other posters, I've considered putting some flavor of Linux on it, but frankly it works fine with the old OS X release, and I can't think of any good reason to lose an OS X platform, even an old one, given that I've got plenty of Linux platforms already. I guess I'll upgrade it to 10.7, but that's the end of the Lion...
Damn that Apple hardware that keeps working 8+ years. :-) *sigh*
It has 10.7.5, and I can’t upgrade past that. Is that Mountain Lion or Lion, I don’t recall?