MP 1,1-5,1 Mac Pro 3,1 format help

[gokhantonyukuk]

Hello everyone. I recently bought a Mac Pro 3,1 without original graphic card. They had cheap Amd Sapphire 6790 so I bought it. My question is how can I install mac os High Sierra on this? I got macbook pro 2012 too. I thought I can install high sierra os on macbook & put ssd to mac pro. Will it work? Or should I replace graphic card?

 

[tsialex]

Hello everyone. I recently bought a Mac Pro 3,1 without original graphic card. They had cheap Amd Sapphire 6790 so I bought it. My question is how can I install mac os High Sierra on this? I got macbook pro 2012 too. I thought I can install high sierra os on macbook & put ssd to mac pro. Will it work? Or should I replace graphic card?

MP3,1 official software support ends with El Capitan (10.11.6). Install El Capitan to a drive, check if your MP3,1 works, then you go for any patched install of macOS. Keep it simple.

This is the thread about High Sierra and unsupported Macs, ask for support there after you get your Mac Pro running with El Capitan.

macOS High Sierra (10.13) Unsupported Macs Thread

macOS High Sierra on Unsupported Macs For the first time since OS X Mountain Lion (10.8) in 2012, macOS Sierra (10.12) changed the official minimum requirements needed for installation, leaving many older (but still perfectly capable) Macs behind. Now macOS High Sierra (10.13) brings a new...

forums.macrumors.com

Btw, be warned that not all AMD 6790 cards are compatible with macOS.

 

[gokhantonyukuk]

@tsialex
Thanks, starting with El Capitan makes sense. I was actually thinking to Flash that 6790 card. Now I'm learning that card may not even work. Well, I'll test & I hope it works.

 

[gokhantonyukuk]

6790 didnt worked. I'm looking for another gpu. The problem is I want Rx560 or another metal gpu for mojave but without boot screen how may I install it I don't know.

 

[Ludacrisvp]

OpenCore for boot screen

 

[gokhantonyukuk]

It seems my Mac Pro has Motherboard Damage, even repaire guy couldn't fix it, offered me old 1,1 Mac Pro. I rejected, costed me like 50 dolars, Almost same prize as the case. So I'm trying to sell it as it's. I already regret buying it.