Mac Pro 3,1 / 4,1 / 5,1 EFI

dmylrea

macrumors 68030
Sep 27, 2005
2,950
3,657
Hi
Following the step by step tutorial https://docs.google.com/document/d/1WNkM9LuGPq1sArO9EedWBHYq14NU7m-mDBLAWWJipyM/edit

We riched the end of the process without any error message.

How can we certify that the Mac Pro 3.1 is in 5.1 mode now?
Looking at the docs, it looks like it adds NVMe boot support to any 3,1/4,1/5,1 Mac Pro. It doesn't put a Mac Pro 3,1 in "5,1 mode".

As far as I know, a 3,1 cannot be tricked into looking like a 5,1 as the sysytem board and CPU and memory is completely different. A 4,1 is very similar to a 5,1 and therefore you can upgrade the ROM of a 4,1 to a 5,1 to gain better CPU and memory speed.

Has anyone that has done this NVMe upgrade confirmed that it does allow NVMe boot?
 

kenwafu55

macrumors newbie
Original poster
Jun 12, 2018
4
0
Looking at the docs, it looks like it adds NVMe boot support to any 3,1/4,1/5,1 Mac Pro. It doesn't put a Mac Pro 3,1 in "5,1 mode".

As far as I know, a 3,1 cannot be tricked into looking like a 5,1 as the sysytem board and CPU and memory is completely different. A 4,1 is very similar to a 5,1 and therefore you can upgrade the ROM of a 4,1 to a 5,1 to gain better CPU and memory speed.

Has anyone that has done this NVMe upgrade confirmed that it does allow NVMe boot?
[doublepost=1528873081][/doublepost]Hi Thanks for you comment

Afther the right flashing ROM process confirmation, the Mac Pro booted properly (even faster than before) but no way to install MAc OS high sierra.
 

Pressure

macrumors 601
May 30, 2006
4,099
327
Denmark
[doublepost=1528873081][/doublepost]Hi Thanks for you comment

Afther the right flashing ROM process confirmation, the Mac Pro booted properly (even faster than before) but no way to install MAc OS high sierra.
The Mac Pro 3.1 (Early 2008) isn't supported, so you need to download the High Sierra Patcher from dosdude1.
 
Last edited:

Pressure

macrumors 601
May 30, 2006
4,099
327
Denmark
Note that the patcher works great with the right video cards. Ours works great with the Appel Radeon 4870, but not so well with the 5770.
You need to install the right patch during post-installation using the patcher. I have no issues with an Radeon HD 5870.
 

kenwafu55

macrumors newbie
Original poster
Jun 12, 2018
4
0
You need to install the right patch during post-installation using the patcher. I have no issues with an Radeon HD 5870.
[doublepost=1529051301][/doublepost]Hi

Do you think that our trouble might com from the graphic card
AMD Radeon HD 7950
 

Acden

macrumors member
Aug 13, 2016
55
2
Russian Federation
[doublepost=1529051301][/doublepost]Hi

Do you think that our trouble might com from the graphic card
AMD Radeon HD 7950
Yes! The problem in that. Exactly HD 7950 is not supported by Mac Pro 3.1 2008 platform. But it is very easy to solve it. After installing OS with dos4dude utility, you need to boot from install source again and do post-install, and check Radeon patch! I'm using this card for years on my cMP3.1.
 
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kenwafu55

macrumors newbie
Original poster
Jun 12, 2018
4
0
The patch adds NVMe support to the 3,1 as well. AFAIK... One needs to be running a patched version of MacOS as the NVMe patch was initially created on Sierra and verified on High Sierra.
[doublepost=1529221360][/doublepost]Hi
Thanks for your interest in my issue
Briefly what it happens :
Once the patch applied to an internal HD the Mac Pro reboots showing the High Sierra installation process, I selected another internal ssd as a destination, and the installation process went on properly.
When I rebooted the Mac Pro selecting the ssd High Sierra disk, instead of the usual Apple logo
another one (similar to a circle with o diagonal bar) showed up meaning there was no supported system in the drive.

Something I noticed when patching the first HD is the the process showed a "completed" message but did not close by itself, I needed to do it manually.

I hope I'm not boring you all
Best regards from Luxembourg
 
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