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macOS Sierra Does NOT Boot with MacPro3,1 MacPro4,1 System Definitions

So I had a 3,1 system def, changed it to 14,2. it now reports a 14,2 in the system profiler. when I try to install macOS from the install file (download from another mac) and go to pick the install disk, they are all grayed out. if I mouse over my boot drive it says something like 'Your mac cannot install this OS version' (dont have the exact wording) and it wont let me proceed. help!
 
It is mentioned to use Multibeast 9.0 to change System Definition.
Where Multibeast 9.0 can be obtained ? I went to the downloads page and the highest version available is 8.2.3
Please help !
Thanks
No, it's not "mentioned." In the OP states:
"1. Get the latest version of MultiBeast for El Capitan"
 
This is my first time upgrading my Hackintosh. I just wanted to know whether changing it to an iMac14,2 using Multibeast would erase any of the existing data on the computer.
 
In "About This Mac", it shows my bus RAM is 1333 but in system report it shows 400MHz. Is it OK or not?
Btw I also changed my Mac to 14.2 and upgraded to 10.12, but Can we install a new one like El Capitan before?

The line you have highlighted is Bus speed, not the speed of the RAM. If your RAM shows up as 1333 Mhz and it's actually rated at that speed, you're fine. If your RAM is rated to be faster, you need to enable XMP detection in Clover Configurator with your config.plist file loaded.

This is my first time upgrading my Hackintosh. I just wanted to know whether changing it to an iMac14,2 using Multibeast would erase any of the existing data on the computer.

None of the data on your drive will change. The only thing that will actually change is your serial number, MLB, and system definition. The first two (or one if you never had an MLB set in Clover to start with) are the important ones, as those changing will cause you to need to use the iMessage fix found here on this site to get your iMessage back up and running. The reason for that is you're basically using a "new" machine as far as Apple's servers are concerned. For 99% of users this likely won't be a huge problem if they don't have more than three total devices registered to their Apple ID (you can register up to five, and having at least two available gives you wiggle room in case of problems).
 
What else do I need to change in
My config file if it was all working with 3,1? Are there some things I need to uncheck in clover? ECC?
 
I have been reading post for people that is running El Capitan to upgrade to macOS Sierra. I am running Yosemite MacPro
(Early 2008) What do I need to do to upgrade to MacOS?
 
I have been reading post for people that is running El Capitan to upgrade to macOS Sierra. I am running Yosemite MacPro
(Early 2008) What do I need to do to upgrade to MacOS?

Change your SMBIOS to one that meets the minimum spec to install Sierra i.e. iMac14,2.
 
I have been reading post for people that is running El Capitan to upgrade to macOS Sierra. I am running Yosemite MacPro
(Early 2008) What do I need to do to upgrade to MacOS?
If you are using Chimera boot loader you must also use Clover when you upgrade to Sierra.
If using Chimera, suggest you clone the drive and upgrade the clone. Saves the problems with removing Chimera/Chameleon legacy boot files. In any case, delete the /Extra folder from the clone root.
 
OK so macOS Sierra is out soon, and we just wanted to clarify things a bit regarding system definitions. For years we here at tonymacx86.com have used MacPro3,1 as the suggested system definition in MultiBeast- it was a basic trouble free universal default. Starting with macOS Sierra, Apple has decided to drop support for MacPro3,1 and MacPro4,1 systems.

In order to test your system definition, navigate to the upper left corner and choose About This Mac. A window will open showing the booted system definition. If this shows Mac Pro (2008) or Mac Pro (2009) you will need to change your system definition before installing macOS Sierra. In fact, you will not be able to download macOS Sierra until you change it.


This is a pain for real Mac Pros, as they now have to trick the OS into supporting their platform. However for CustoMacs, changing your system definition is very simple.

1. Get the latest version of MultiBeast for El Capitan
2. Choose Customise > System Definitions > iMac > iMac14,2
3. Choose Build > Install
4. Reboot system

Going forward we're going to be using iMac14,2 system definition as our standard universal default. This is used in UniBeast 7.0 and for default MultiBeast 9.0 installations.

Hope this helps!
:geek::ugeek::mrgreen:
When will unibeast 7.0 and multibeast 9.0 be out for down load
 
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