Hotdog Zanzibar
Well-known member
Charles - my Mac Pro 1,1 is running Mavericks perfectly. You have to install it with a bootloader-type setup (I used SFOTT) but it works great and it's not difficult to do at all. SFOTT creates the install disc (or thumbdrive) for you once you set it up for your machine. Has detailed instructions too.
The only downside is that you'll need to upgrade your video card for Mavericks. There are no drivers for the 7300 in 10.9, so your card will behave VERY poorly. Any GeForce card made after 2011 should work out of the box with Lion or later. I got a nice GTX 570 1.25gb card off a guy on craigslist for about $40 and it works fine.
I've read about people running Yosemite and El Cap on the 1,1 too, but with varying degrees of success. Besides, Yosemite was such a turd, who'd want to try?
The only downside is that you'll need to upgrade your video card for Mavericks. There are no drivers for the 7300 in 10.9, so your card will behave VERY poorly. Any GeForce card made after 2011 should work out of the box with Lion or later. I got a nice GTX 570 1.25gb card off a guy on craigslist for about $40 and it works fine.
I've read about people running Yosemite and El Cap on the 1,1 too, but with varying degrees of success. Besides, Yosemite was such a turd, who'd want to try?