How can we install Mountain lion on Mac pro 1,1 with newer video cards, (i.e., hd5770) Theres no reason this machine should not support Mountain lion, given others have been able to install and run developer previews of Mountain lion with little or no modification to already existing scripts.
Mac Pro, Mac OS X (10.7.4), 1,1
You've received some bad information. Only DP 1 ran because it stil contained 32-bit drivers and the 32-bit kernel image. All later releases will not run on a Mac Pro 1,1 o r 2,1.
Been asked like a thread about 8 down from yours.
https://discussions.apple.com/thread/4112476?tstart=0
And kicked around for months such as here:
http://forums.macrumors.com/forumdisplay.php?f=1
Other than the day 10.6.8 no longer gets security updates... and you need it, not, not until it is proven too.
I'm having the same issue. I did find the way to get Lion at least. (I was still on 10.6.8) Too many apps are now requiring Lion to even run. It's sad. Mac Pro 1,1 should still be able to run Mountain Lion with a little effort by Apple.
If you were somehow able to make the firmware storage area big enough to hold the much larger EFI-64 firmware, you still have a few unresolved issues:
• The graphics cards are not well-supported in later versions, because they are too slow, do not support the latest graphics enhancements, and the older cards are dying of extreme old age.
• The amount of RAM memory that can be added is severely limited.
• The RAM memories for these older Macs are still so expensive, it can be cheaper to sell the old Mac Pro, buy a new Mac Pro, and load it up with 24GB of RAM, and still come out ahead.
• The PCIe 1 slots are so slow that graphics and other cards can be slowed down.
• Newer Mac Pros (that support Multi-threading) benchmark close to twice as fast as the Mac Pro pre-2009 with the same number of processors at the same nominal speed.
mountain lion mac pro 1,1
