ERROR 12 on BOOTCAMP HAS BEEN FIXED BY MICROSOFT! in WINDOWS INSIDER (FAST) !
 
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ERROR 12 on BOOTCAMP HAS BEEN FIXED BY MICROSOFT! in WINDOWS INSIDER (FAST) !  

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JesterOfTorutuga
(@jesteroftorutuga)
Active Member
Joined: 5 months ago
 

Hey guys, for those of your asking about pci.sys, the instructions are here: https://egpu.io/forums/pc-setup/egpu-fail-after-update-to-windows-19-03/

I am frankly at a loss why the 2004 Fast Insider build worked for me without doing anything, but not for you. I'm at even more of a loss as to why the pci.sys trick didn't work for others on 1909, while it worked like a charm for me. I see some of you are using Thunderbolt 2 setups, maybe that has something to do with it? Honestly no idea.

Anyway, just wanted to report that the recent Catalina update had no impact whatsoever on my extremely stable 1909 (with 1903 pci.sys) Bootcamp setup. I am about to upgrade to the release version of 2004, and will report back on how that goes.

2018 15" MacBook Pro (RP560X) (8th,6C,H) + Sonnet Breakaway 550 w/RX5700 XT + MacOS 10.15.5 + Windows 10 2004

(Solved Error 12 in both 1909 and 2004 with the 1903 pci.sys file swap, as explained here: https://egpu.io/forums/pc-setup/egpu-fail-after-update-to-windows-19-03/)

 
2018 15" MacBook Pro (RP560X) [8th,6C,H] + RX 5700 XT @ 32Gbps-TB3 (Sonnet Breakaway 550) + macOS 10.15.5 & Win10 [build link]  


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JesterOfTorutuga
(@jesteroftorutuga)
Active Member
Joined: 5 months ago
 
Posted by: @jesteroftorutuga

Hey guys, for those of your asking about pci.sys, the instructions are here: https://egpu.io/forums/pc-setup/egpu-fail-after-update-to-windows-19-03/

I am frankly at a loss why the 2004 Fast Insider build worked for me without doing anything, but not for you. I'm at even more of a loss as to why the pci.sys trick didn't work for others on 1909, while it worked like a charm for me. I see some of you are using Thunderbolt 2 setups, maybe that has something to do with it? Honestly no idea.

Anyway, just wanted to report that the recent Catalina update had no impact whatsoever on my extremely stable 1909 (with 1903 pci.sys) Bootcamp setup. I am about to upgrade to the release version of 2004, and will report back on how that goes.

Upgraded to 2004, which presumably had a new updated pci.sys file, resulted in an Error 12 -- as I was expecting from this thread. 

However, once again I booted up in Catalina, navigated into System32/drivers, made a backup of the 2004 pci.sys file, and then dropped the 1903 pci.sys file in there. Error 12 is gone, system working without issue as it was in 1909 after applying the pci.sys trick. 

I think this is the easiest solution to everyone's problems, but may confuse people. I myself put off trying it because the thread linked above made is sound significantly harder than it actually is. If you are running a bootcamp system, you can skip the USB flash drive steps entirely and do the pcy.sys swap in MacOS.

I would wager this is better than running an outdated build of Windows with possible security and other flaws. But I'm no expert. Just some guy who follows instructions good. Hope this helps some others navigate their troubles. 

This post was modified 5 months ago

2018 15" MacBook Pro (RP560X) (8th,6C,H) + Sonnet Breakaway 550 w/RX5700 XT + MacOS 10.15.5 + Windows 10 2004

(Solved Error 12 in both 1909 and 2004 with the 1903 pci.sys file swap, as explained here: https://egpu.io/forums/pc-setup/egpu-fail-after-update-to-windows-19-03/)

 
2018 15" MacBook Pro (RP560X) [8th,6C,H] + RX 5700 XT @ 32Gbps-TB3 (Sonnet Breakaway 550) + macOS 10.15.5 & Win10 [build link]  


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mac_editor
(@mac_editor)
Famed Member Moderator
Joined: 4 years ago
 

@jesteroftorutuga, AFAIK macOS cannot mount Windows NTFS volumes as writable without 3rd-party software so while you can copy the pci.sys file from the drive to backup, you cannot replace it from macOS (cannot write to volume). Do you have something like Paragon NTFS on macOS?

 

purge-wranglertbt-flashpurge-nvdaset-eGPU
Insights Into macOS Video Editing Performance

Master Threads:
2014 15-inch MacBook Pro 750M
2018 15-inch MacBook Pro

 
2019 13" MacBook Pro [8th,4C,U] + RX Vega 64 @ 32Gbps-TB3 (Mantiz Venus) + macOS 10.14.6 & Win10 [build link]  


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JesterOfTorutuga
(@jesteroftorutuga)
Active Member
Joined: 5 months ago
 

@mac_editor, Ah yeah apols, thats why I'm able to do that

 

2018 15" MacBook Pro (RP560X) (8th,6C,H) + Sonnet Breakaway 550 w/RX5700 XT + MacOS 10.15.5 + Windows 10 2004

(Solved Error 12 in both 1909 and 2004 with the 1903 pci.sys file swap, as explained here: https://egpu.io/forums/pc-setup/egpu-fail-after-update-to-windows-19-03/)

 
2018 15" MacBook Pro (RP560X) [8th,6C,H] + RX 5700 XT @ 32Gbps-TB3 (Sonnet Breakaway 550) + macOS 10.15.5 & Win10 [build link]  


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Red
 Red
(@red)
New Member
Joined: 5 months ago
 

@jesteroftorutuga, Can you close the lid without it crashing the driver? 

 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

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JesterOfTorutuga
(@jesteroftorutuga)
Active Member
Joined: 5 months ago
 

@red, yeah I basically always run it with the lid closed. Even boot it with the lid closed. I can open and close the lid as I please. It runs essentially entirely as it should.

 

2018 15" MacBook Pro (RP560X) (8th,6C,H) + Sonnet Breakaway 550 w/RX5700 XT + MacOS 10.15.5 + Windows 10 2004

(Solved Error 12 in both 1909 and 2004 with the 1903 pci.sys file swap, as explained here: https://egpu.io/forums/pc-setup/egpu-fail-after-update-to-windows-19-03/)

 
2018 15" MacBook Pro (RP560X) [8th,6C,H] + RX 5700 XT @ 32Gbps-TB3 (Sonnet Breakaway 550) + macOS 10.15.5 & Win10 [build link]  


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dabesdiabetic
(@dabesdiabetic)
Active Member
Joined: 6 months ago
 

@jesteroftorutuga, Are you on the latest build 19640.1? I can cold boot but still have to have laptop open with the custom booter to "hit any key" and then it works. Would love to be able to boot with it closed and have it work. I believe I did the custom bootkey, I used some program (clover?) to do something. It was a couple months ago.

 

2018 MBP 13' 2.7 ghz I7 16 gb ram with Gigabyte gaming box Radeon 580


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Shaun Kim
(@shaun_kim)
Active Member
Joined: 1 year ago
 

I’m not understanding this thread, quite frankly.

Are people saying that the update enables eGPU without any hacks whatsoever or that it makes a already hacked build usable again?

I personally haven’t encountered error 12 after I implemented goalque’s automate-egpu. And I did that as soon as this whole error 12 shenanigans started with the infamous update.

If it is true that the new update makes everything plug n play I’d like to try it, but this thread is hella confusing.

Late 2016 tbMBP 15" + Razer Core X + Vega64 + Windows 18.362.418 + Adrenalin 19.8.1 + goalque's automate-egpu


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Arizor
(@arizor)
Trusted Member
Joined: 8 months ago
 

The updates do NOT make everything plug and play, in my experience. I still need to use an EFI boot. That said, at least now the latest 'Fast Insider' Update works for me just doing the EFI boot, whereas previously only 1903 worked and nothing else.

But of course, the very nature of the beast is YMMV, so for some people, Windows updates are doing the trick.

2019 16-inch MacBook Pro Retina (2.3ghz Intel i9) // Radeon 5500M (8GB).
MacOS Catalina // Bootcamp Win10 2004 (Build 19041).
Razer Core X // Vega 64 // 2m Active Thunderbolt cable.


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whatisegpu
(@whatisegpu_1)
New Member
Joined: 5 months ago
 

On a MBP 2019 15", I was able to upgrade to Fast Insider (build 19628.1) and my 5700 XT/Core X was able to boot without any issues. The only thing I installed was the bootcampdrivers.com. I have to boot it with the eGPU plugged in but apart from that no other limitations. I'm trying to decide whether to update to latest Fast Insider or leave it as is.

2019 MBP 15" with Razer Core X and a RX 5700 XT


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