Question on Alternate Clean Install Method

[riven2000]

I'm just curious about a Mojave install method that worked for me yesterday - has anyone else done an alternate clean install where you have a reformatted target drive, High Sierra on another, and the Mojave installer on yet another? I tried using a USB stick but it kept saying I didn't have a metal-compatible GPU (I do) and that Filevault was turned on (it isn't). I thought I would have to do an upgrade, so I started up from the High Sierra drive, opened the Mojave installer from the other drive - and it allowed me to do a clean install to the new System drive. Just wondered if this is a known workaround as I've never seen it mentioned before.

 

[KeesMacPro]

I'm just curious about a Mojave install method that worked for me yesterday - has anyone else done an alternate clean install where you have a reformatted target drive, High Sierra on another, and the Mojave installer on yet another? I tried using a USB stick but it kept saying I didn't have a metal-compatible GPU (I do) and that Filevault was turned on (it isn't). I thought I would have to do an upgrade, so I started up from the High Sierra drive, opened the Mojave installer from the other drive - and it allowed me to do a clean install to the new System drive. Just wondered if this is a known workaround as I've never seen it mentioned before.

This is a known bug for a Mac Pro 5,1 (or 4,1>5,1) with a Kepler family Nvidia GPU (e.g. GTX680/780 etc) installed.

 

[riven2000]

Interesting. Yeah, I have a GTX 760.

 

[KeesMacPro]

Yep, no explanation still afaik ...