HackFlags 0x600 Registry Edit - AMD Radeon eGPU Boot Camp Error 12 Solution
 
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HackFlags 0x600 Registry Edit - AMD Radeon eGPU Boot Camp Error 12 Solution  

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egpufan
(@egpufan)
New Member
Joined: 4 years ago
 

Got it to work on a Mac Mini 2018 (i5) running Win 10 20H2 (Build 19042.608) on Razer Core X Chroma.  I used the hackflags withWin10-Radeon-Software-Adrenalin-Oct2020 drivers.

This post was modified 7 months ago

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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Sean Lou
(@sean_lou)
Active Member
Joined: 9 months ago
 

So, has anyone tried to use Windows 20H2 to run BootCamp with 5700XT so far? I'm wondering if it works. Thanks!

2020 MacBook Pro 13" (4 Thunderbolts)
2.3 GHz Intel Core i7, 32GB RAM
Razer Core X, XFX 5700 XT 8GB


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Agent
(@agent)
Active Member
Joined: 1 year ago
 
Posted by: @joutain

does it also only work with this version? win10_1903_V1_English_x64 (18362.30)

 

or you could do with with latest version?

It does not, for my setup anyway (Mac Mini 2018, Radeon VII, Mantiz enclosure). My setup worked with Windows 1903 18362.30.

After applying this registry setting, I allowed Windows to apply the 2020-10 Cumulative Update (bringing the version to Windows 1903 18362.1139) but it would not recognize the eGPU. Specifically, when rebooting with both the eGPU and iGPU connected, the iGPU presented an irregularly flashing Windows logo and screwy blue screen, and the eGPU was no screen; when rebooting with only the eGPU connected, it was just no screen.

However! Updating to Windows 20H2 allows the eGPU to work even without this registry setting. I’ll make another post about that.

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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Ruglet
(@ruglet)
Active Member
Joined: 1 year ago
 

I’ve also tested this with the 16” MacBook Pro (Razer core V2, Radeon RX5700) and got the same results as itsage. I’m afraid the error 12 is still there. The only solution that works for me is the pci.sys replacement but even then it disables Bluetooth and will only work with the November 2019 Adrenaline drivers from bootcampdrivers.com.

2019 16” MacBook Pro (2.6Ghz 6 Core i7, stock)
Razer Core V2
ASUS AMD Radeon RX5700
LG 27UL850


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itsage
(@itsage)
Founder Admin
Joined: 4 years ago
 

@ruglet, To resolve error 12 on the 2019 16-in MacBook Pro, I keep Windows 10 at 1903, version 18362.30. PCI.SYS swap works too but the newest versions of Windows 10 2004 do not like this and would force Recovery to put original PCI.SYS back in system folder.

 

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2020 13" MacBook Pro [10th,4C,G] + RX 6700 XT @ 32Gbps-TB3 (CM MasterCase EG200) + Win10 1903 [build link]  


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Muscovite
(@muscovite)
Active Member
Joined: 1 year ago
 

Rats!  I was hoping this would finally work

Removed set_apple_os.efi

Added the key

Same behaviour as that without the set_apple_os.efi:

Code 12 if hot-plugged

Blank screen if cold-plugged

Reinstalliing the set_apple_os without removing the keys works, for what it's worth.

I guess having a (TB-only) monitor plugged into the mini and not the gpu does matter.  Again.

So, I am back to my previous "solution":

Booting into windows after a shutdown works 90% of the time.

Hot-plugging gives s USB 3.1 unrecognised device error

Mac mini (2018) / 3,2 GHz 6-Core Intel Core i7 / 64GB / 1TB + LG Ultrafine 5K + Sonnet eGFX 550
Sapphire Nitro+ RX 5700 XT (plug and play in macOS Catalina 10.15.5, IMPOSSIBLE in Bootcamp Windows, no matter the version)
Sapphire Pulse__RX 580 8GB (plug and play in macOS Catalina 10.15.5, WORKS cold-plugged after a shutdown on Windows 2004


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Kane Xu
(@kane_xu)
Active Member
Joined: 6 months ago
 

2019 13" touch bar MBP, with ADT link, AMD RX 580, win10 20H2, sadly this reg hack seems not working.

I download the .reg file, applied and check the regedit and confrim the value is there.

I then hot plugged it and not working, and then I keep it plugged in and reboot into windows, just black screen, as always.

 

I'll now try a complete shut down and power on with cold plugged...

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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Kane Xu
(@kane_xu)
Active Member
Joined: 6 months ago
 
Posted by: @kane_xu

2019 13" touch bar MBP, with ADT link, AMD RX 580, win10 20H2, sadly this reg hack seems not working.

I download the .reg file, applied and check the regedit and confrim the value is there.

I then hot plugged it and not working, and then I keep it plugged in and reboot into windows, just black screen, as always.

 

I'll now try a complete shut down and power on with cold plugged...

ok I just back from complete power-off and power-on with cold plugged, now the egpu is working.

HOWEVER! even before the reg hacking, my black screen issue is kind of random. sometimes everything just goes nicely and sometimes my external monitor just show me black, unpowered.

So I cannot say this time while I'm writing the post via the external monitor, is by the help of the reg hacking. I'll continue checking my system till now, if it goes nicely each time after, then I can say the reg hacking is working.

 

BTW, do you think "a complete power-off then power on with TB3 cable plugged" is any different by just "a windows restart while TB3 cable is hot plugged"? For the bootcamp sitting I've already set it to windows, so each time the system boots with out pressing the opt key, it'll leads to windows. And on the other hand, I've set my ADT link power switch to "always on", so the system at the other end of the TB3 cable is always running.

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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MackieWack
(@mackiewack)
Active Member
Joined: 2 years ago
 

Hey,

Been beating myself up on this for a bit.  Have a Macbook Air 2020 with Big Sur and Razer Core + Vega 56.  Works OOB in Big Sur, of course.  Boot Camp is a whole another thing!  I had most current version of windows 10 and kept getting the "207" error.  Did a fair bit of reading and seemed that everything after 1903 was more likely than not to be a lost cause.  I found an .ISO of 1903 V1 and installed it.  But still now luck.  Used DDU and drivers from bootcampdrivers.  Tried the hackflag thing but still no luck.  Anyone have some suggestions?  I've looked through the forums.  Seems like it should be doable but i'm not getting anywhere.  Thanks.

2020 Macbook Air with i5 Intel + Razer Core V2 + Radeon Vega 56

 
2017 13" MacBook Pro [7th,2C,U] + GTX 1070 @32Gbps-TB3 (AORUS Gaming Box ) + Win10 1903 [build link]  


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MackieWack
(@mackiewack)
Active Member
Joined: 2 years ago
 

Well, I'm still at it will no better luck.  After more digging, I was able to downgrade my Win 10 install to 18362.295

It was actually the simplest thing I've done so far.  I was sure it was going to give me grief in that I would be downgrading from .30 to .295 but it didn't.  'Winver' confirms I'm running .295 now.

So then I started from scratch again.  I had already downloaded the bootcampdrivers for AMD 'RED' edition ( the newest ones).  Booted up safe mode and ran DDU.  Booted back into regular, connected my eGPU and ran AMD set up from bootcampdrivers.  It failed (again...)  The process appears to complete before as it's getting ready for the reboot and '207' error puts up.  So I unplugged the eGPU and restarted anyway.  Got back to Windows and hotplugged.  Then uninstalled the VEGA 56 driver from device manager and left the eGPU plugged in and rebooted again....No luck.  Still unusable.  So then I tried to put the 'HackFlag' in RegEdit as instructed.  Made no difference.

 

So...I'm back to square one, and pretty frustrated.

2020 Macbook Air with i5 Intel + Razer Core V2 + Radeon Vega 56

 
2017 13" MacBook Pro [7th,2C,U] + GTX 1070 @32Gbps-TB3 (AORUS Gaming Box ) + Win10 1903 [build link]  


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