After a restart it fall back to previous not working state. And after that I restarted an could use my GPU on the second (always not working TB Bus). So I installed the intel Thunderbolt driver to the port that was not in use by the NVMe drive.
Now I saw the the driver in device manager is not marked with problem but in detail there is the apple driver installed with description "no driver installed". And when trying to boot with disk and eGPU in same TB Bus the error above still persists.
I now plugged in the eGPU (Razer Core Chroma with 6800 XT) in running windows in the working TB Bus and it recognized the USB hub / Network / GPU – but do not display anything. Only the eGPU / TB3 NVMe device do not work. Oh and regular USB devices via USB 3 Hub works well. But it looks like the same from what I can see. Strange is that after this action after driver booster the system runs with the same problem but with the other TB Bus (exactly these ports which are not not running and vice versa). How do I get that TB Bus running again? I also tried PRAM and SMC reset. Installed for sure also bootcamp drivers and all windows updates. In device manager everything looks fine and installed. When plugin the windows disk in the not recognized ports it starts booting but then (for sure) get blue screen (INACCESSIBLE_BOOT_DEVICE) when loading the "driver" or something – so within the boot screen and the initial boot process work these ports. When plug the eGPU in the other TB Bus nothing happens with the eGPU since the ports are not recognized. When sticking my eGPU in the same TB Bus in the other port it won't boot (INACCESSIBLE_BOOT_DEVICE). I can boot in windows by using the working TB Bus (no matter which of the two ports). (TB Bus is for me the Two-Pair of TB Ports which are PCIe connected) like displayed in macOS system informations. I tried in safe mode to get the older drivers back of the TB devices in device manager but this did not really work.Īfter hours of getting it working again I just reinstalled Windows but the problem is still present. After that TB ports are not working from one TB Bus. Then I wanted to install bluetooth driver which were (strange) not installed and messed up the whole thing with "driver booster". an eGPU Connected to one TB Bus and my external NVMe with Windows on the other TB Bus of the iMac Pro. I had my Bootcamp drive running a few weeks now great.
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