2018 Mac Mini [8th,6C,B] + RX 5700 XT @ 32Gbps-TB3 (Razer Core X Chroma) + macOS...
 
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2018 Mac Mini [8th,6C,B] + RX 5700 XT @ 32Gbps-TB3 (Razer Core X Chroma) + macOS 10.15.2 & Win10 1909 [Gibby]  

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Gibby
(@gibby)
Active Member
Joined: 3 months ago
 

System Specs
1. Late 2018 Mac mini - i7-8700B/UHD Graphics 630 iGPU/32GM RAM/1TB SSD
2. LG 27" 4K Monitor x2, Samsung 27" 1080P Monitor x1


OS

macOS Catalina 10.15.2 + (Bootcamp) Win10 Pro Version 1909, build 18363.535


eGPU Hardware

Razer Core X Chroma+ AMD RX 5700 XT 50th Anniversary


Installation

1. Connect single monitor using iGPU HDMI port
2. Use Bootcamp to install Windows 10, Version 1909, build 18363.418
3. Apply all available updates (currently to 18363.535)
4. Place pci.sys (renamed to pci-1903.sys) from Win10 Version 1903, build 18362.30 into c:/Windows/system32/drivers/ folder
5. Select Start, Settings, Update & Security, Recovery, Advanced Startup, Restart Now
6. Using command prompt (x:\Windows\system32>) enter the following commands pressing the enter key after each line to perform the rename of pci.sys:
c:
cd windows\system32\drivers
ren pci.sys pci-1909.sys
ren pci-1903.sys pci.sys
exit
7. Select the 'Turn off your PC' button.
8. Disconnect iGPU HDMI cable, connect eGPU to Thunderbolt closest to iGPU HDMI connection
9. Power on
10. Disable Windows Updates

 

Benchmarks

Tool Windows / MacOS
Geekbench 4 186740 / 183297
Geekbench 5 62055 / 63008
LuxMark - Luxball 27646 / 27075
LuxMark - Mic 17771 / 20858
LuxMark - Hotel 2720 / 5102

Comments
Huge thanks to the post here ( https://egpu.io/forums/pc-setup/egpu-fail-after-update-to-windows-19-03/) and @itsage for instructions.

I am able to boot into Windows / MacOS without any issues. Without the pci.sys from 1903 I get the dreaded error 12 in Windows 1909 and no amount of troubleshooting fixed the issue.

This topic was modified 2 months ago

2018 Mac Mini Core i7 8700B 32GB RAM 1TB SSD + Razer Core X + AMD Radeon RX 5700 XT 50th Anniversary


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whoDean
(@whodean)
Active Member
Joined: 6 months ago
 
  1. You’ve given me confidence to try this with mysimilar setup, thank you

Late 2018 Mac mini 6-Core i7-8700B
UHD Graphics 630 iGPU
64GB RAM/1TB SSD

Razer Core X Chroma

MSI Gaming Radeon RX 5700 XT

LG 34GK950F-B 34" 21:9 Ultragear WQHD Nano IPS Curved Gaming Monitor with Radeon FreeSync 2 (2018), Black


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 @Os
(@os)
Active Member
Joined: 3 months ago
 

Did this work for anyone else? I am about to try it but I will first have to clean install Windows 10.

Could you say how did you use CMD to rename the file? Also, did you have to change ownership during that process, because for the life of me I don't get this file ownership thing (This is my first time using Windows at home in the last 10 years). Also where did you get the file from? 

I have similar setup: Mac mini 2018 + Razer Core x + AMD RX 5700 

This post was modified 3 months ago

Mac mini + Razer Core x + PowerColor RX 5700XT + Catalina 10.15.2


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(@koncept_zero)
Eminent Member
Joined: 4 months ago
 

@gibby

I have the same question as @Os. How did you perform step 4? Can you provide a bit more info? I tried searching for the pci.sys file in W10 but I can't find it. Are you using   Goalque ‘s  automate-eGPU EFI ? Did you DDU after installing all updates? Did you use bootcampdrivers.com?

This post was modified 3 months ago

2018 Mac Mini (8th,6C,B) + Radeon VII @ 32Gbps-TB3 (Razer Core X) + macOS 10.15.2


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Gibby
(@gibby)
Active Member
Joined: 3 months ago
 

@koncept_zero

I will try to provide additional detail as this was a confusing process going into it for me as well.

  1. Take the pci.sys from Win10 1903 and rename it to an alternate name (I chose pci-1903.sys).
  2. Browse on your computer to the following directory: c:/Windows/system32/drivers/
  3. Paste the pci-1903.sys into this folder.
  4. At this time you will have the unmodified pci.sys from Win10 1909 and in addition the pci-1903.sys files in the c:/Windows/system32/drivers/ directory.

Continue the steps as listed above - I didn't follow any additional guides or steps to take ownership of any files. I hope this helps. If I need to provide more detail please let me know where there is still confusion. I don't have enough posts to embed a picture, but you can find a picture of my 'final state' here: https://imgur.com/a/T6kMlRc

 

2018 Mac Mini Core i7 8700B 32GB RAM 1TB SSD + Razer Core X + AMD Radeon RX 5700 XT 50th Anniversary


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Gibby
(@gibby)
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Joined: 3 months ago
 

@os

I was able to use command prompt to rename the file as in step 5 above I had selected to reboot into a recovery state for Windows 10. This negates the need for a special boot disk / USB to boot into recovery mode while still allowing you to perform the necessary changes to the local file system without the need to take ownership of the file. I got the file from downloading the ISO from this link: https://tb.rg-adguard.net/public.php using the options in this image: https://imgur.com/a/IyrTMY4 . The following steps are taken from this link: https://egpu.io/forums/pc-setup/egpu-fail-after-update-to-windows-19-03/ and noted by @bas_timer.

  • Open install.wim with 7-Zip
  • Mount the Image and then extract the following file
  • X:\sources\install.wim\1\Windows\System32\drivers\pci.sys

2018 Mac Mini Core i7 8700B 32GB RAM 1TB SSD + Razer Core X + AMD Radeon RX 5700 XT 50th Anniversary


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Gibby
(@gibby)
Active Member
Joined: 3 months ago
 

I would also like to add that a Bootcamp update was just released (6.1.10) and it has provided approximately an additional 3-5% performance boost to the benchmarks linked above.

2018 Mac Mini Core i7 8700B 32GB RAM 1TB SSD + Razer Core X + AMD Radeon RX 5700 XT 50th Anniversary


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tsakal
(@tsakal)
Reputable Member
Joined: 2 years ago
 

Thank you excellent guide. 

Do you know whether this will work with a 2018 mbp 13?

A. 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

B. 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Gigabyte Gaming Box RX580 8Gb, Mac OS Catalina 10.15.2, Ext SSD Windows 10 1803

C. 3.1 GHz I7, 16Gb, 1TB MBP 13 2015 TB2 , EGPU Gigabyte Gaming Box RX580 8Gb


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Gibby
(@gibby)
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Joined: 3 months ago
 

@tsakal

Although I do not have access to a MB Pro to validate, yes, I would expect similar results. 

2018 Mac Mini Core i7 8700B 32GB RAM 1TB SSD + Razer Core X + AMD Radeon RX 5700 XT 50th Anniversary


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 @Os
(@os)
Active Member
Joined: 3 months ago
 

@gibby

Thanks for the explanation and info about Bootcamp update. I took a little break from trying while replacing my new GPU card to the XT. I just realized it was only a marginal difference. Once my card comes, I will start running some more trials on the pci.sys method. Let me know if something else worked for you 

Mac mini + Razer Core x + PowerColor RX 5700XT + Catalina 10.15.2


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stoikr
(@stoikr)
New Member
Joined: 3 months ago
 

@Gibby First of all, thanks for sharing your build and for providing the guide. I have almost the exact setup (I only have the non-chroma enclosure) and I've been trying to get Windows working with my 5700 xt for over a month now.

Unfortunately I'm still struggling with the renaming step in the command prompt. I found an extracted the pic file from the 1903 ISO and copied it to the Desktop. I renamed the file to pci-1903.sys and copied it to the drivers folder. At this stage, Windows asks me to provide administrator permission to copy to this folder. I press continue (no password needed, maybe because my account has no password) and it's in the folder.

After this, I restart to recovery mode (settings...restart now). I choose Troubleshoot/Advanced Options/Command Prompt. I then select my account and I'm in the prompt on drive x (?). I navigate to the drivers folder (x:\Windows\system32\drivers) and when I check for the folder's content (with 'dir') it doesn't show the pci-1903.sys file and therefore I can't rename this file.

I am a total Windows newbie for sure and I could really need some help with this step. Do I have to change the drive somehow? Do I have to to something in the safe mode?

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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 @Os
(@os)
Active Member
Joined: 3 months ago
 

@gibby

Do you have your windows installed on an internal or external SSD? 

Mac mini + Razer Core x + PowerColor RX 5700XT + Catalina 10.15.2


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Gibby
(@gibby)
Active Member
Joined: 3 months ago
 
Posted by: @stoikr

After this, I restart to recovery mode (settings...restart now). I choose Troubleshoot/Advanced Options/Command Prompt. I then select my account and I'm in the prompt on drive x (?). I navigate to the drivers folder (x:\Windows\system32\drivers) and when I check for the folder's content (with 'dir') it doesn't show the pci-1903.sys file and therefore I can't rename this file.

You are so close! Get back to this point and then follow the more detailed steps below:

1. At the command prompt (x:\Windows\system32>) enter the following commands pressing the enter key after each line:

c:
cd windows\system32\drivers
ren pci.sys pci-1909.sys
ren pci-1903.sys pci.sys
exit

2. Select the 'Turn off your PC' button.

3. Disconnect the HDMI cable from your internal graphics and connect the thunderbolt e-gpu cable. 

4. Power on your Mac Mini and wait for the magic to happen!

This post was modified 2 months ago

2018 Mac Mini Core i7 8700B 32GB RAM 1TB SSD + Razer Core X + AMD Radeon RX 5700 XT 50th Anniversary


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Gibby
(@gibby)
Active Member
Joined: 3 months ago
 

@os

Internal SSD.

2018 Mac Mini Core i7 8700B 32GB RAM 1TB SSD + Razer Core X + AMD Radeon RX 5700 XT 50th Anniversary


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 @Os
(@os)
Active Member
Joined: 3 months ago
 

@gibby

Thanks for your explanation. I have couple questions: 

did you use DDU in any part of the process? 

Did you disconnect the egpu before performing the file replacement?

also, once you boot back from safe mode, do you keep the card plugged in? 

at what point did you install the AmD driver?

This post was modified 2 months ago

Mac mini + Razer Core x + PowerColor RX 5700XT + Catalina 10.15.2


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stoikr
(@stoikr)
New Member
Joined: 3 months ago
 
Posted by: @gibby
Posted by: @stoikr

After this, I restart to recovery mode (settings...restart now). I choose Troubleshoot/Advanced Options/Command Prompt. I then select my account and I'm in the prompt on drive x (?). I navigate to the drivers folder (x:\Windows\system32\drivers) and when I check for the folder's content (with 'dir') it doesn't show the pci-1903.sys file and therefore I can't rename this file.

You are so close! Get back to this point and then follow the more detailed steps below:

1. At the command prompt (x:\Windows\system32>) enter the following commands pressing the enter key after each line:

c:
cd windows\system32\drivers
ren pci.sys pci-1909.sys
ren pci-1903.sys pci.sys
exit

2. Select the 'Turn off your PC' button.

3. Disconnect the HDMI cable from your internal graphics and connect the thunderbolt e-gpu cable. 

4. Power on your Mac Mini and wait for the magic to happen!

Thank you so much, this helped me with the renaming. Still I can't get it running. I followed your steps, but the display stayed black after the restart(s). I got so desperate that also bought a GTX 1660 just to see, if I can get it running with this card. And I was able install the Nvidia drivers, but after a restart, everything was as messed up as before when I tried it with the 5700xt. So I will return the 1660 and stick with the AMD for now.

At the moment I'm not sure if I want to give it another shot, maybe with the next Catalina update. Of course I was expecting troubles, but this is nothing but devastating anymore.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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Gibby
(@gibby)
Active Member
Joined: 3 months ago
 

@os

did you use  DDU  in any part of the process? 

No. Only the steps outlined above.

Did you disconnect the egpu before performing the file replacement?

Please reference my original post. Step 1 instructs you to connect a single monitor using the iGPU (integrated GPU) HDMI port. No eGPU is connected until step 8.

also, once you boot back from safe mode, do you keep the card plugged in? 

See steps 7 and 8 in my instructions above. Referenced here for assistance: Disconnect iGPU HDMI cable, connect eGPU to Thunderbolt closest to iGPU HDMI connection.

at what point did you install the  AmD driver ?

Bootcamp 6.1.10 includes AMD drivers, however you can install the AMD drivers of your choosing with the eGPU connected.

 

This post was modified 2 months ago

2018 Mac Mini Core i7 8700B 32GB RAM 1TB SSD + Razer Core X + AMD Radeon RX 5700 XT 50th Anniversary


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Gibby
(@gibby)
Active Member
Joined: 3 months ago
 

@stoikr

I'd love to assist in getting you up and running. Possibly try starting fresh with a Bootcamp installation of Win10 Version 1903, build 18362.30. This version booted with the eGPU for me without any need for file editing. 

Based on questions from Os, the only other item I could mention in more detail is that the eGPU remained disconnected until step 8. I was fully booted into Windows using the integrated GPU / internal HDMI port. I then shut down Windows entirely, disconnected the integrated GPU / internal HDMI port, connected the eGPU to the Thunderbolt cloest to the integrated GPU HDMI port, and then powered Mac Mini on. I do not get any display until the Windows log on screen.

2018 Mac Mini Core i7 8700B 32GB RAM 1TB SSD + Razer Core X + AMD Radeon RX 5700 XT 50th Anniversary


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FAO
 FAO
(@fao)
New Member
Joined: 1 week ago
 

@stoikr, I had the same issue that the file pci-1903.sys was "invisible" so for obvious reason it wasn't possible to replace the pci.sys

I resolved this without the recovery startup by changing the permission on psi.sys (owner to myself) renamed it and renamed the pci-1903.sys file. I let all see the pci-1903.sys file.

 

@Gibby, Thanks for your procedure. it works with updated Mac and Win OS as of today. I have 2018 mini with Razer x Chroma and Sapphire Nitro+ 5700 XT special edition and it's working very well. 

 

As a side remark, I also have Parallel desktop that is not bad at all but many games just doesn't work. 

 

This post was modified 1 week ago

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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