Upgrading from 10.6.8 to Yosemite > "This version of OS X 10.10 cannot be installed on this compute

[delToro]

Greetings,
Hopefully someone could offer some advise regarding upgrading from a TonyMacPro 10.6.8 (Snow Leopard) build
to at least Mavericks. The only option on the Apple store is Yosemite. However a download of Yosemite is refused
with the message "This version of OS X 10.10 cannot be installed on this computer."

I am familiar with the system requirements and I assumed that my TonyMac build from 2011 satisfied the "Mac Pro (Early 2008 or later)" requirement. My planned upgrade includes a MSI R9 280X 6GB graphics card. My current 10.6.8 build has a Nvidia GTX 460 768MB. Snow Leopard 10.6.3 was installed from a retail disk purchased on Amazon, & the 10.6.8 was from a software update download from Apple.

My TonyMac build is a: GA-X58A-UD3R Rev 2.0; 24GB Ram; Intel Core i7 940; 2.97 GHz; Nvidia GTX 460 768MB; OSX 10.6.8 Snow Leopard.

The hardware overview from "About this Mac" displays:

Model Name: Mac Pro
Model Identifier: MacPro3,1
Processor Name: Intel Core i7
Processor Speed: 2.97 GHz
Number Of Processors: 1
Total Number Of Cores: 4
L2 Cache (per core): 256 KB
L3 Cache: 8 MB
Memory: 24 GB
Processor Interconnect Speed: 4.8 GT/s
Boot ROM Version: MultiBeast.tonymacx86.com
SMC Version (system): 1.30f3
Serial Number (system): G88451235J4
Hardware UUID: 70BC4DC6-741A-569C-8071-BB0F574B88B7

Any advice / insight would be greatly appreciated.
thank you,

 

[nigelmoxley]

You need to get someone with a Mac or Hackintosh to download the installer for you from the App Store. The installer downloads to the Applications folder and then executes. Just close down the installer, copy it to a flash drive and then copy it to your Applications folder on your Snow Leopard Hackintosh. Then do the following:

- backup up your Snow Leopard installation to another drive just in case (using Superduper)
- download Unibeast 5.0.1 and most recent Multibeast for Yosemite
- create Unibeast USB (select Legacy USB)
- boot from Unibeast USB and install Yosemite over your existing Snow Leopard installation
- reboot using Unibeast into new installation
- all hardware should still work
- run Multibeast to install Chimera 4 and anything else you may need
- reboot without USB drive and all should work as before, apps and data etc.

Good luck

 

[delToro]

much appreciated, NigelMoxley...!!
now on the right track
delToro

 

[sababa555]

NigelMoxley

When installing 10.10.1 over 10.6.8, must I create a new partition at the install screen and delete the 10.6.8 partition?

 

[neckcutta]

NigelMoxley

When installing 10.10.1 over 10.6.8, must I create a new partition at the install screen and delete the 10.6.8 partition?

If you delete your current 10.6.8 partition or install to a new one, you'll no longer be "updating"; you'd be doing a "fresh install". This thread is about UPDATING from 10.6 to 10.10