MP 1,1-5,1 Help with OCLP

[ajap88]

I've got a Mac Pro 5,1 running 144.0.7.3.1 bootrom and Mojave. I'm trying to run open core legacy patcher 2.4.1 to install a newer non supported Mac OS. I also have a RX560 (Mac flashed & metal supported) videocard installed.

I am not sure why I am having this problem and have tried everything I can. I've installed OCLP to a freshly formatted SATA HDD then I rebooted the system to boot off this HDD. The Apple boot picker appears as my post picture. I then select the OCLP EFI option, the screen goes blank for 2 seconds (no text appears at all even though I've ticked the Verbose option in OCLP settings). Then after 2 seconds, the Apple boot picker reappears. For some reason the OCLP patching is not running. I am pulling my hair out with this issue.

🙏 Brain trust please help

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[Bigwaff]

I've got a Mac Pro 5,1 running 144.0.7.3.1 bootrom and Mojave.

Boot rom 144.0.0.0.0 is latest.

I'm trying to run open core legacy patcher 2.4.1 to install a newer non supported Mac OS.

What unsupported version of macOS?

I've installed OCLP to a freshly formatted SATA HDD then I rebooted the system to boot off this HDD.

Disconnect all other SATA drives and try again.

 

[reader50]

When you installed OCLP to the SATA drive, I assume you adjusted the settings in advance? Make sure the model is set to a MP 5,1 and the OpenCore boot picker checked to activate?

On rare occasions, I've had to do an SMC reset to get OCLP booting properly.