MP 1,1-5,1 Is there a foolproof way for Big Sur on Mac Pro 3.1?

[marqus]

Hi there,

like virgin Mary I came to a MacPro 3.1 with 16 gigs of RAM. Is there a way to install Big Sur on it? Even in the unofficial lists, there is no MP3.1 mentioned.

The standard way, I put BS on Mac mini 2012 does not work, it just reboots while starting from USB stick.

thx for any link.

MArkus

 

[jbarley]

Here is a link that seems to indicate it is possible.

GUIDE - How to Install macOS Big Sur on Unsupported Mac Pro [MacPro3,1, Mac Pro4,1 and MacPro5,1]

How to Install macOS Big Sur on Unsupported Mac Pro An EliteMacx86 Exclusive Guide - This guide covers a clean installation of macOS Big Sur on Unsupported Mac Pro, unofficially. The guide supports Mac Pro3,1, Mac Pro4,1 and MacPro5,1. Overview Recently, Apple announced their new macOS...

elitemacx86.com

 

[marqus]

Thanks, I will try different ways. Nothing worked successfully so far :-(

 

[glenthompson]

what graphics card do you have in it? It needs to be Metal compatible. My 3,1 has a HD 5780 which is not supported by Metal.

 

[marqus]

oh damn, forgot that. Yes, of course, it the GT120 that kills it.

I thought HD5770 etc is supported? Do you know a decent card, that will work and does not cost a fortune?

 

[glenthompson]

No idea on possible cards. I don’t try to keep up on the GPU scene - too complicated. My graphics needs are well met by stock chips.

 

[marqus]

So I got a GTX 680 and patched the ROM. Runs fine in Catalina.
Tried to use bigmac patcher by starplayrX and created a patched Big Sur USB HDD as suggested. It shows up on boot menu, it starts loading (grey apple on white bg, no progress bar), it even shows those verbose-y logging lines as it does since patched Mojave or High Sierra, but then it just reboots. A crash out of nowhere. It keeps rebooting from now on at the same moment. Looping.
No matter what I tried, I am just to stupid to install Big Sur on my MP3.1.

does anyone please has any idea?

can you help me?

thx

 

[Dayo]

does anyone please has any idea?

Ask the developer of the BigMac Patcher: https://github.com/StarPlayrX/bigmac/issues

 

[rvbcrs]

So I got a GTX 680 and patched the ROM. Runs fine in Catalina.
Tried to use bigmac patcher by starplayrX and created a patched Big Sur USB HDD as suggested. It shows up on boot menu, it starts loading (grey apple on white bg, no progress bar), it even shows those verbose-y logging lines as it does since patched Mojave or High Sierra, but then it just reboots. A crash out of nowhere. It keeps rebooting from now on at the same moment. Looping.
No matter what I tried, I am just to stupid to install Big Sur on my MP3.1.

does anyone please has any idea?

can you help me?

thx

Maybe stating the obvious, but I had the same! I did a NVRAM reset and out of the blue Big Sur started correctly!

 

[freqrider]

Use openCore Legacy Patcher.

OpenCore Legacy Patcher

Experience macOS just like before

dortania.github.io