GA-P55M-UD2 Catalina Upgrade

[tonymacx86]

Use the latest Lilu and WhateverGreen kexts to configure the 570. Otherwise looks like my old P55 system specs. Should work fine with Catalina.

 

[unix_fan]

I'm running Catalina on a GA-P55M-UD2 using the straightforward Unibeast 10 + MultiBeast option.
MultiBeast 12.3.0-3 did not install expected drivers into the EFI, and Clover did not recognize the boot drive
Solution : I simply did a copy/paste of the EFI/OC/drivers folder from the USB drive

I always install on a fresh disk then use Migration Assistant.

I've had this P55M-UD2 running as a hackintosh since I bought it in 2009 (!!!).

SMBios uses the default 14,2 (haven't tried 6,1 which OpenCore suggests for this Lynnfield board).
Video:
I have a an Nvidia 710 I bought, to replace the Nvidia 1060 I had been using on prior OS (High Sierra). Upgrading to the better card is a task for another day.
Sound:
A $8 Sabrent USB external adapter solves having working sound.

Sleep/wake does not work, but that's also task for another day.

I spent 10 days trying to upgrade using the OpenCore approach. I was thwarted by the oddest problem: my HP USB keyboard is not recognized by the OpenCore boot loader, no matter what USB port I used. Faced with that, I tried but couldn't figure out how to get the "picker" to default to the right selection; it's a hurdle I couldn't surpass. So back to UniBeast/MultiBeast - which was a surprisingly easier route to baseline functionality.

 

[TESTER321022]

@ibruno

Hi,
did you ever get Catalina working on your GA-P55M-UD2?

 

[TESTER321022]

Hi,
At least I could do a fresh install of Catalina on my GA-P55M-UD2, but it didn't work with the ATI - Graphics. I put in my old nVidea 9500GT. The problem was, that with the ATI, I never came further than to choose, on which drive the macOS should be installed. After this, there there was nothing shown on the screen.

At the moment I cannot install the latest update - I've got 10.15.7, but there seems to be one more (supplemental update).

Strange: After every install-step, the BIOS of the board was reset - I can't´remember if this happened during former installation-processes.

At the moment there are no special nVidea drivers are loaded, hopefully I´ll get the ATI running.

 

[ibruno]

@ibruno

Hi,
did you ever get Catalina working on your GA-P55M-UD2?

Hi,

Yes I was able to get Catalina running by doing a new installation. Unfortunately I fried the motherboard soon afterwards and now have a different motherboard.