One other problem that I have which I believe is more likely to be related to some new RAM that I’ve installed is the fans spinning up much higher than usual on wake from sleep.

I decided to try some cheaper RAM without the Apple approved heatsinks to bring the total system memory up to 26 GB. Mac Pro 1,1 ATI Radeon HD 5870 1028MB 16 GB 800 MHz RAM 4GB, running as 667MHz updated pair CPUs Intel X5365 four HDs two DVD-RW. Also MacBook Pro 17”: from 2007 running Yosemite legitimately. I had converted my Mac Pro 1,1 up to Mavericks and followed the updates to their conclusion at 10.9.4. Back then I used the method of removing all the HDs from the Mac Pro but one, targeted that drive from a compliant Mac Book Pro running Mavericks and arrived at Mavericks on the Mac Pro on that drive, returning the other drives as well once OS was proven. So when Yosemite came out in GM and after the smoke cleared, I used the most recent form of Piker-Alpha boot file, a thumb drive and Hennesie2000’s excellent guide, that Mr. The approach worked well, took some time of course loading, and I have been running it for a couple of weeks without any problems.

I managed to easily install Yosemite on my MacPro 1,1, by using Piker-Alpha’s pre-patched bootable Yosemite installer: I recommend doing this without reservation to your old Mac Pro. How to connect imessage to macbook os x yosemite install#

How to connect imessage to macbook os x yosemite upgrade#.How to connect imessage to macbook os x yosemite update#.How to connect imessage to macbook os x yosemite install#.

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