[Solved] eGPU error 12 fail after update to Windows 10 1903 or newer (OS Build 18362.329 or newer) inc downgrade pci.sys version solution
Do you have an external usb drive you could install to? The SSD controller in Mac's with T2 chips are integrated into the T2 chip and will not be functional without Boot Camp Drivers, but you should be able to install to another drive if you have one. If so there are tutorials on the web with instructions for installing windows on an external drive.
I managed to disassemble the drivers from the Bootcamp driver USB that the Bootcamp App created and was successful in installing the OS into the partition. Everything works...ok.
There are TWO drivers that I simply can't get to work. A broadcom wifi driver, and one other driver (unknown device). If I could get those...I think it's done. Haven't tried to boot into the Mac yet.
But so far, the OS is pinned to 1809. I could push it to 1903...either way, the EGPU should work indefinitely like this.
Now if I could only get it to work. Plus, for some reason, my Windows Defender icon doesn't show up in the system tray...but I checked the registry...and the entry for the SecurityHealth is there and all the WD settings say it's on and active.
Lots of little bits...but if I could get the missing drivers fixed, I'd be in the home stretch.
Well, everything seems to be working except for the missing system tray Windows Defender icon (probably a simple fix).
However...I have NOT installed a graphics driver yet. That comes next.
I do need help with one thing guys. I'm missing ONE driver. I've already tried to install the drivers created by the Bootcamp Assistant...twice. I've searched through the BA USB...twice. It keeps telling me that it's not found. I have no idea what it could be. I don't have anything connected to it. It seems to be tied to Bluetooth. The device location is 4097. Otherwise it just says "device". Lots of you guys have Mac Minis...if you could look up that driver/driver location and if you have any ideas how to install the driver, I'd be much obliged.
@robboerman, I am using a mbp 13 2018 with w10 .295 on an ext ssd. I have stopped updates since and never had a problem. Running mainly project cars 2 and f1 2019 with a sim rig including a steering wheel and pedal connected through usb and bluetooth headset.
Running for hours at 1440p at 120hz on a 65" 4k tv monitor at average over 100 fps with the card a bit boosted.
Thanks @tsakal, at least this gives me some confidence to continue this quest. I did all the changes including the EFI boot (apple_set_os to enable Intel graphics) but still I am stuck on error 12.I also tried to disable other PCI ports but I either get a completely black screen (on both screens) or error 12.
Do you have a specific usbc/thunderbolt port you are attaching the EGPU to?
@robboerman, There are different tricks for different laptops. When I started I followed exclusively the guides for the 13' in order to avoid any mishaps.
In my case with the mbp13 2018, I always connect the egpu on the top left port with the official apple cable (used the gigabyte on my previous setup with no issues) . Also upon initial setup I disabled port 9 which I reenabled after everything went fine. Currently when I needed to do a new copy of my ext ssd setup I forgot to reenable the port 9 but I cannot see any issues , I use three of the four usbc ports plus wifi and bluetooth at the same time while playing high intensity sim games at 120 fps on 65" with no issues so I left it like this. While playing, steam is on as well as the amd software together with macsfan to control the fan speed.
Actually once everything got settled down I am amazed at how stable this setup is. However, I tend to limit my curiosity in trying installing additional drivers or apps or features, which I believe is key to maintain stability.
In addition the second disk I created about 1-2 months ago I used the latest bootcamp software supplied by apple as it was released at the time. With the second disk the process was very fluent it just went through. With first disk I initially faced error 12 and after disabling port 9 I run the setup file from amd downloaded drivers and bootcamp amd drivers a couple of times until the cars was identified. As I said it touk a few times doing one or the other setup rebooting without the card and again until it was found.
I hope you find the above helpful
A) 2020 MacBook Pro, i7-1038NG7, 32GB RAM, 1TB, EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, Samsung 65 Q70R
Mac OS Catalina 10.15.5, Internal Bootcamp Windows 10 2004 pci.sys swap.
B) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, LG 32UK550
Mac OS Catalina 10.15.2, Ext SSD Windows 10 1903 V1 .295
Windows 2019 is installed. Unfortunately, while the OS detects the egpu and gives it a basic driver...I can't seem to install any AMD driver because it craps out and says its not detected. Error 182. I've tried enterprise drivers, 19-series, 20-series and even bootcampdrivers.com drivers but none get past the gpu detection.
It might be something about Windows Server 2019 blocking the driver installation. I'm just not sure what though.
Also, I'm still missing the driver for location 4097. Something Bluetooth related...but nothing I use seems to install.
Any suggestions to these two issues would be grand. Everything else is fixed and working.
@, I managed to point the Basic Driver for the Radeon VII to the bootcamp.com driver and it accepted it. But I can't update it and I don't have access to the software. Even though it clearly shows Radeon VII...it still says "not detected" when I try a different driver.
Also, I realized that the missing driver is in the section of the Device Manager labeled "Software Components".
Is it possible my Thunderbolt isn't installed properly and that's why the GPU isn't being detected? No idea. I'm exhausted.