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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nudoru
(@nudoru)
Active Member
Joined: 4 months ago
 

Windows 10 on the latest fast ring isn't working for me - build 20211.1000. I'm getting error 12. Previously I had a fully updated Win 10 install w/ BCD August drivers and tried the pci.sys method and Windows wouldn't even boot! I took a chance an upgraded to the Insider build based on people saying it was working - but not for me.

 

MacBook Pro 16" 5500m

Razer Core X

Powercooler Red Devil 5700 xt

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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Mini i5
(@mini-i5)
Honorable Member
Joined: 1 year ago
 

@nudoru

Just FYI, there’s a report of the latest regular build (Windows 10 Version 2004, Build 19041.508) working without error 12 here:

https://egpu.io/forums/bootcamp/egpu-working-on-windows-2004-no-workarounds-needed-wth/#post-86319

 

 

2018 Mac Mini [8th,6C,B] + RX Vega 56 @ 32Gbps-TB3 (Sonnet Breakaway 650) + macOS 11.1 & Win10 [build link]  

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Florin Samareanu
(@florin_samareanu)
Eminent Member
Joined: 1 year ago
 

@mini-i5 that’s the version I have and it’s a no-go on 16 inch+5500m+5700xt egpu due to error 12. 

This post was modified 4 months ago

16'' Macbook Pro - Razer Core X Chroma - PowerColor Red Devil 5700XT - LG 27UK850


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Brandon Baik
(@brandon_baik)
Active Member
Joined: 5 months ago
 

Maybe try the april bcd drivers?

That's what worked for me.

Argh, I just wish Windows could make their stuff more consistent - that's the one thing I like about Macs, even with apple-enforced limitations--> minimal driver fussing needed.

It either works or it doesn't work --> more time for more productive stuff

Do you have an extra thunderbolt device connected to your computer?

I had resource probs with that a little while back, since my external thunderbolt drive and the eGPU were both connected to one side of my MBP 16" (and thus had to share the same controller).

2019 16" MacBook Pro (RP5300M) [9th,6C,H] + RX 5600 XT @ 32Gbps-TB3 (Sonnet Breakaway 550) + macOS 10.15.6 & Win10 2004 [build link]  

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Florin Samareanu
(@florin_samareanu)
Eminent Member
Joined: 1 year ago
 

I tried everything: only egpu connected and switched ports, connected my USB C hub. Nothing worked. And if I connect my nvme enclosure (only the enclosure) windows hangs at login screen and laptop reboots. I'm building a sffpc now, f* it.

16'' Macbook Pro - Razer Core X Chroma - PowerColor Red Devil 5700XT - LG 27UK850


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brentx
(@brentx)
New Member
Joined: 1 year ago
 

@florin_samareanu, That is the same issue I had back in April.  I require the pci.sys hack to get the eGPU to work with my 5700XT (16" MBP with 5500m) in Windows 10 1909.  I upgraded to the GM version of Win10 2004 when it was available in the fast ring, and my system wouldn't even boot after I reapplied the pci.sys file.  The system would Error 12 on me without the pci.sys file.  I just have not wanted to break my setup since then, which is why I haven't played with it again.

I might take a stab once the 20H2 version is released later this year.

 

This post was modified 4 months ago

2019 16" Macbook Pro (32GB RAM, 8GB 5500m, Core i9 9880H), PowerColor Gaming Station eGPU + PowerColor AMD 5700XT


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Vault13
(@vault13)
New Member
Joined: 2 years ago
 

Hey all, I just got my sonnet 550.  As an Nvdia user (1650 low profile repurposed from optiplex sff), will I still need the EFI boot if I go the Fast/DEV route?

Edit: strictly using Windows only, gaming mostly

 

This post was modified 3 months ago

2012 nMBP 13-inch (mid) + Gigabyte 1650 OC low profile + Sonnet Breakaway 550


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Piipperi800
(@piipperi800)
Eminent Member
Joined: 3 months ago
 

I updated to the latest fast build but I still get the error 12

MacBook Pro 15" Late 2013, Sonnet Breakaway Box 550, AMD RX 5700 XT


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NEO LOVE
(@neo_love)
New Member
Joined: 6 months ago
 

fast ring upades works from time to time (more often works) - maybe they're just drunk there or something...

[20251.1 - didn't work again, previous one work(ed, until recovery...)] Cry

This post was modified 2 months ago

mac mini 2018 + radeon rx5500xt [sonnet egfx 550]


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BITFYRE
(@bitfyre)
Active Member
Joined: 3 months ago
 

@nicholasdc, Ive tried this and doesnt work for me

 

MacBook Pro: 2019 16" w/ 64GB RAM, i9 Processor, and 1 TB Storage.
eGPU: Razer Core X w/ AMD Radeon RT 5700XT | Triple Dissipation


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