[EFI Loader] Error 12 Fix in Boot Camp for Apple T2 Security Chip Macs (apple_se...
 
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[EFI Loader] Error 12 Fix in Boot Camp for Apple T2 Security Chip Macs (apple_set_os loader v0.5)  

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Albert Johannes
(@allie_b)
Active Member
Joined: 2 years ago
 

Hello all, 

I have a 2019 16inch base modal and an RX570 in a sonnet 350w breakaway developer box.

I play quite a bit of game in windows and using the egpu allows me to play Dota 2 in 4k and keep the CPU cool.

 

To get into Bootcamp with an AMD gpu on a 16 it is needed to do the "Port Dance".

 

As far as I've read the only egpu setups that work with AMD GPUs in Bootcamp and does not require the port dance is when using a Razer core X.

 

This method works reliably for me but is quite annoying, does anyone have an idea if it is possible by any chance to get past the port dance with a normal Sonnet dev box and AMD gpu?

 

Thanks

 

Macbook Pro 16 2019 i7 5300m + Sonnet TB3 Breakaway-box 350w + MSI 570 8GB + Samsung U28E590D 4K


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Vincent
(@vincent)
Active Member
Joined: 5 months ago
 

@allie_b

My setup is Macbook Pro 16, dGPU 5500M 8GB, eGPU RX 5700 XT 8GB and Razer Core X. But I have to do the Port dance either. I haven't found a solution yet for this. Beside that the eGPU works flawless. I am happy with it and have sold the GeForce RTX 2080 S (also because it doesn't work with Mac OS).

 

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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unknownsolo
(@unknownsolo)
Trusted Member
Joined: 3 years ago
 

Swapping out the eGPU to Razer Core X Chroma did it for me. I posted it about it over here: https://egpu.io/forums/mac-setup/fix-read-this-if-you-are-having-error-12-in-boot-camp-with-macbook-pro-16/

Thank you guys so much for all the awesome work.

Late 2019 MacBook Pro 16-inch with AMD 5500m dGPU - Razer Core X Chroma - AMD RX 5700 XT

 
2017 15" MacBook Pro (RP560) [7th,4C,H] + GTX 1080 Ti @ 32Gbps-TB3 (ASUS XG Station 2) + macOS 10.13.1 [build link]  


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Fido Fan
(@fido_fan)
New Member
Joined: 2 months ago
 

@aa15032261, Hi, what should I do if I have MacBook Air 2019 ( which is a type of mac that contains Apple T2 Security Chip, but doesn't have the right thunderbolt port)? I have been sticking to the error 12 can't solve the problem. Is there any method I can follow?

 

I am really desperate t about this issue, please help me out Smile

 

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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raebyagthefirst
(@raebyagthefirst)
Eminent Member
Joined: 2 months ago
 

2019 MacBook Pro 16'' 5500M, works with Windows 1903, even in clamshell mode. Thanks.

Hope we will find a better solution rather than that port dance Smile

2019 16" MacBook Pro (RP5500M) [9th,8C,H] + RX 5700 XT @ 32Gbps-TB3 (Razer Core X) + macOS 10.15.6 & Win10 2004 [build link]  

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

@fido_fan

As your model is simpler than the MBP, try installing the latest version of Windows 2004 spring update. 

 

2018 Mac Mini i5 / 6-core 3.0-4.1 Ghz / 32GB / 256GB / Intel UHD 630 / PowerColor Gaming Station / PowerColor dual-fan RX 5700 XT / Mac OS 10.15.6 Catalina / Windows 2004 😏 / Dual LG 27" 4K displays


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raebyagthefirst
(@raebyagthefirst)
Eminent Member
Joined: 2 months ago
 

After some testing, I noticed that it probably isn't required to plug TB3 cable on the right side.

What I do is I start laptop with TB3 plugged on the left side, choose Win boot partition via Opt key, then when I see EFI loader I press any button. When I see windows boot spinner I unplug cable. When I see welcome screen, I plug it back and eGPU works.

2019 16" MacBook Pro (RP5500M) [9th,8C,H] + RX 5700 XT @ 32Gbps-TB3 (Razer Core X) + macOS 10.15.6 & Win10 2004 [build link]  

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Arizor
(@arizor)
Trusted Member
Joined: 7 months ago
 
Posted by: @raebyagthefirst

After some testing, I noticed that it probably isn't required to plug TB3 cable on the right side.

What I do is I start laptop with TB3 plugged on the left side, choose Win boot partition via Opt key, then when I see EFI loader I press any button. When I see windows boot spinner I unplug cable. When I see welcome screen, I plug it back and eGPU works.

Confirming this works for me too, can't believe I didn't try this before.

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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Toprak Eraslan
(@toprak_eraslan)
Active Member
Joined: 1 month ago
 
Posted by: @mini-i5

@fido_fan

As your model is simpler than the MBP, try installing the latest version of Windows 2004 spring update. 

 

Which driver did you use? I tried the red driver on bootcampdrivers.com, the bootcamp driver on AMD's website, and also the most recent normal drive for the radeon rx 580 on AMD's website.

For context, I have a mid 2018 13" Macbook Pro with the T2 security chip and an Intel Iris Plus Graphics 655 igpu. I'm trying to get my Radeon rx 580 in a Sonnet eGFX Breakaway Box 550W (GPU-550W-TB3) enclosure to work, but no luck.

Right now I have the 2004 build of windows, but I also tried the 1903 v1 build and a fast ring insiders build. I've reinstalled bootcamp like 5 times now and keep getting error 12 :(. At some point I would get error 43 and somehow managed to get no errors once or twice in the 4 days. No luck since then.

I would really appreciate y'alls help! Grin

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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raebyagthefirst
(@raebyagthefirst)
Eminent Member
Joined: 2 months ago
 

@toprak_eraslan, so have you installed the EFI loader from the first post here? AFAIK, it's the only way for T2 chips to support eGPU right now.

 

2019 16" MacBook Pro (RP5500M) [9th,8C,H] + RX 5700 XT @ 32Gbps-TB3 (Razer Core X) + macOS 10.15.6 & Win10 2004 [build link]  

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