Let me know when you want to upgrade, and I'll give you the steps.Thanks again Stork. I will wait for 10.14.5 and then give it a try with a RX 590 or even a Vega if I feel like splurging on a special treat I guess there will be a messy moment as I try to upgrade to Mojave (thus losing h/w accel on the NVIDIA board), then swap in the AMD gpu... but hopefully I won't end up bricked!
I've never see this before. Are you trying to install High Sierra or Mojave?
Been there, done that.High Sierra. sorry for the delay, I'm in grad school. thanks for your help.
Been there, done that.
Boot to the Desktop, then About This Mac and click on the Version to get your build number. Then get the correct Nvidia driver from the tonymacx86 Downloads menu.
Hopefully, this will get you squared away.