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[GUIDE] keeping iGPU activated when booting into Windows using apple_set_os.efi  

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nando4
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June 18, 2017 6:03 am  

@joshua_11, would you mind submitting an implementation guide? You have a just-released 2017 15" MBP combined with a AMD eGPU.  We have no existing implementation for that combo:

https://egpu.io/external-gpu-implementations-table/?table_filter=%22Mac%2015-in%20-TB3%22#search

Yours would be a first and give confidence that newer AMD eGPUs such as the RX580 shipping with the Apple Dev Kit can be Win10 bootcamped on this platform.

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table    •    Several builds
2018 14" HP Elitebook 840 G5 i5-8350U 16GB 512GB + GTX 1080Ti @ 32Gbps-M2 (ADT R43SG) + Win10


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Raikiri
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June 18, 2017 6:21 am  

Can I still follow this method even if I don't have a Win 10 UEFI? If not, is their any hope for me to get any eGPU detection on  Win 10?

My current setup is MacBook Pro mid 2012 non retina i5 + akitio node + GTX 1050 ti.

 

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


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nando4
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Eason85
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June 22, 2017 5:18 am  

So I've got a 2017 MBP 15. Installed Win 10 boot camp (creator's update), powerplan, trackpad++, and a few others things.

I ran the integrated.bat, and now booting into windows gets me a permanent blue windows logo that just flickers. MacOS boots fine.

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


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goalque
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June 22, 2017 5:43 am  

Please describe precisely your eGPU setup and pre-boot process, otherwise we cannot help you. Win 10 creator's update is not recommended.

What is a "permanent blue windows logo"? If it's "ACPI BIOS ERROR" BSOD, you have to hot-plug the eGPU.

automate-eGPU EFIapple_set_os.efi
--
late-2016 13" Macbook Pro nTB + [email protected] (Netstor HL23T) + macOS & Win10
late-2016 13" Macbook Pro nTB + GTX980/[email protected] (Netstor HL23T) + macOS10.13 & Win10


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Eason85
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June 22, 2017 5:56 am  
Posted by: goalque

Please describe precisely your eGPU setup and pre-boot process, otherwise we cannot help you. Win 10 creator's update is not recommended.

What is a "permanent blue windows logo"? If it's "ACPI BIOS ERROR" BSOD, you have to hot-plug the eGPU.

I am not using it with an eGPU yet - I am simply trying to get the iGPU working instead of the dGPU. After I run "integrated.bat", next boot into Windows the blue windows logo will flicker on the screen indefinitely. This happens whether I use the efi_boot USB or not. To get it working again I have to boot into macOS. Then I can run Windows again and it will boot properly, but with the dGPU.

 

(I have a mantiz venus at home, but I'm traveling so I'll play with that soon.)

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


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goalque
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June 22, 2017 8:48 am  

@Eason85: Doesn't sound good. What's your 2017 15" MBP model identifier? We have not yet much reports from 2017 MBP owners. Apple tends to add more security layers. Can you check the integrated.bat output in Windows command prompt (as administrator)? It should say success.

I would also check the apple_set_os.efi output in UEFI Shell.

automate-eGPU EFIapple_set_os.efi
--
late-2016 13" Macbook Pro nTB + [email protected] (Netstor HL23T) + macOS & Win10
late-2016 13" Macbook Pro nTB + GTX980/[email protected] (Netstor HL23T) + macOS10.13 & Win10


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Eason85
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June 22, 2017 11:20 am  

I'm sorry for being uninformed with Macs; how can I find my model ID? The integrated.bat does say "success" after I run it. I'm installing anniversary update now and will try again to see if I have better luck.

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


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Eason85
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June 22, 2017 9:56 pm  

Try as I might, I can't get into functioning windows. After running the spoofed macOS loader I eventually get to a solid colored background with a mouse cursor -- but I can't do anything once there. I just have to shut down. 

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


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rawweb
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June 23, 2017 3:09 am  

Having troubles getting my eGPU to work in Windows 10. Followed the steps to the letter but feel like my external Windows drive is thwarting my efforts. A few have mentioned similar issues in this thread but it's unclear if there was resolution. All components (USB, SATA) of the eGPU (Mantiz Venus) are working in Windows, and my Asus RX 580 appears in DM but with error code 12. apple_set_os.efi was one of the solutions offered from the guide 'Solving eGPU error 12 in Windows 10'. 

My setup:

L16 15" MBP RP460 - 10.13 Dev Beta 2 - Mantiz Venus RX 580

External SSD for Windows Boot

I tried the USB stick but knew it wouldn't work since my Windows volume is external. I threw apple_set_os.efi (renamed bootx64.efi) on the Windows EFI partition on the external SSD. When I select the external windows boot volume it just boots over to MacOS. Am I missing something painfully obvious here? Any help is much appreciated. 

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


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nando4
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June 23, 2017 3:21 am  

@rawweb, suggest do a USB install of rEFInd and add apple_set_os.efi to that USB stick as outlined at the bottom of the opening post. rEFInd can find and present bootable OS in it's startup menus when dealing with more complex drive/OS layouts.

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table    •    Several builds
2018 14" HP Elitebook 840 G5 i5-8350U 16GB 512GB + GTX 1080Ti @ 32Gbps-M2 (ADT R43SG) + Win10


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rushvora
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June 23, 2017 3:26 am  
Posted by: rawweb

Having troubles getting my eGPU to work in Windows 10. Followed the steps to the letter but feel like my external Windows drive is thwarting my efforts. A few have mentioned similar issues in this thread but it's unclear if there was resolution. All components (USB, SATA) of the eGPU (Mantiz Venus) are working in Windows, and my Asus RX 580 appears in DM but with error code 12. apple_set_os.efi was one of the solutions offered from the guide 'Solving eGPU error 12 in Windows 10'. 

My setup:

L16 15" MBP RP460 - 10.13 Dev Beta 2 - Mantiz Venus RX 580

External SSD for Windows Boot

I tried the USB stick but knew it wouldn't work since my Windows volume is external. I threw apple_set_os.efi (renamed bootx64.efi) on the Windows EFI partition on the external SSD. When I select the external windows boot volume it just boots over to MacOS. Am I missing something painfully obvious here? Any help is much appreciated. 

I had the EXACT same problem, and I spent 2-3 hours busting my head and finally solving it. Like @nando4 says, install rEFInd via macOS, and do the USB stick thing as well, with bootx64.efi. What will happen is, as you press alt/option when booting up, there will be 3 options, Mac, EFI Boot, and another EFI Boot! One of these is your external SSD, and the 2nd one is the boot drive. When you did not have rEFInd installed, selecting the USB stick would directly boot into macOS (that's what happened for me). However with rEFInd installed, it will now go into ANOTHER boot from selection window. And here, you might have 3-5 options. One will be macOS, and one will be Windows, with their respective icons. HOWEVER, do NOT select the Windows icon! Instead, select the stock icon option JUST BEFORE the Windows icon, which should say something like boot from NTFS volume. I don't remember exactly. THAT option will boot into your external SSD, with the iGPU activated!

late-2016 15" MacBook Pro RP455 + [email protected] (Mantiz Venus) + Win10 // external SSD


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rawweb
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June 23, 2017 5:17 am  

Feel like I'm getting closer...but still no dice. Brain is bogged after a few hours of trying things.

When I select the NTFS option as you suggested, I get this error:

Here are the other options I'm seeing:

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


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rushvora
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June 23, 2017 5:54 am  

Ah it's not that option. Try the other tri-coloured option.

late-2016 15" MacBook Pro RP455 + [email protected] (Mantiz Venus) + Win10 // external SSD


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rawweb
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June 23, 2017 11:42 am  
Posted by: rushvora

Ah it's not that option. Try the other tri-coloured option.

Thanks for the help with this rushvora, I feel close. Are you thinking the third pic that reads "Boot fallback boot loader from EFI". or the other icon between the gray and blue windows icon?

I've tried the Boot fallback boot loader from EFI but my 460 is still running. I've tried disabling it in DM to no avail. Perhaps something is wrong with the step I followed to activate the iGPU with the bat?

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


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nando4
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June 23, 2017 11:46 am  

One of the menuitems is the apple_set_os.efi. Select it which will bring you back to the rEFInd menu. Then select Windows and check for the existence of the iGPU in Device Manager.

rEFInd's own macOS 10.9 spoofing doesn't work with 10.12.4 or thereafter so need to load apple_set_os.efi to do it.

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table    •    Several builds
2018 14" HP Elitebook 840 G5 i5-8350U 16GB 512GB + GTX 1080Ti @ 32Gbps-M2 (ADT R43SG) + Win10


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rushvora
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June 23, 2017 12:48 pm  
Posted by: rawweb
Posted by: rushvora

Ah it's not that option. Try the other tri-coloured option.

Thanks for the help with this rushvora, I feel close. Are you thinking the third pic that reads "Boot fallback boot loader from EFI". or the other icon between the gray and blue windows icon?

I've tried the Boot fallback boot loader from EFI but my 460 is still running. I've tried disabling it in DM to no avail. Perhaps something is wrong with the step I followed to activate the iGPU with the bat?

OMG, what nando4 said!! No wonder I was unable to boot into Windows! I'm so sorry, I was not fully correct in my earlier post. I ended up reinstalling Windows 10 to the external SSD due to being unable to even get Windows started earlier, without even having the eGPU attached. I followed this guide, which has worked perfectly for me, 100% of the time - 

Now I've got everything working perfectly!

Main things to do - in macOS, install rEFInd. Download EFI manager( https://www.tonymacx86.com/resources/efi-mounter-v3.280/), so that you can mount the EFI partition. In that, EFI disk -> EFI folder, create a folder called custom, and put apple_set_os.efi in that folder. From now on, in rEFInd, this script will appear BEFORE the macOS logo. After doing this, follow this guide EXACTLY -  https://egpu.io/forums/builds/2016-15-macbook-pro-rp460-gtx1080ti32gbps-tb3-akitio-node-macos-windows-10/.

Every time you restart with the intention of booting into windows, after having run integrated.bat, you basically select the first icon which runs the script, and then select the icon before the Windows logo. I will edit this post with the exact name that appears for me when I'm done posting. I didn't need to do any DSDT editing etc, the guide I linked to above worked perfectly! You're very close to the finish line!

Added pictures. One shows the EFI Manager app, one shows the exact path for the os set file, one shows the script icon before OS X icon, and one shows the icon to select for booting into Windows after having run the aforementioned script.

Note : I do not have internal LCD acceleration by the eGPU, internal LCD is still driven by the iGPU. However I don't need internal LCD acceleration as I plan to game on external monitor in Windows.

Also, I don't plan to use the eGPU in macOS at all, so the only eGPU related thing I have done in macOS is installing rEFInd and adding the os set file to the EFI mounted drive in the correct place.

I'll try and post my implementation step by step guide tomorrow night, it's 6 am and I need to sleep! 

late-2016 15" MacBook Pro RP455 + [email protected] (Mantiz Venus) + Win10 // external SSD


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rawweb
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June 24, 2017 12:22 am  

I've followed the steps to the letter and at least have the Intel HD 530 now showing up. 

No dice on the RX 580, still showing Code 12 and no display on my Apple Cinema Display connected to it. I've even disabled the dGPU lane. This is maddening!

Honestly imagined getting this to work on MacOS to be harder than Windows. 🙁

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


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tmitrovi
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June 24, 2017 1:52 am  
Posted by: rushvora
OMG, what nando4 said!! No wonder I was unable to boot into Windows! I'm so sorry, I was not fully correct in my earlier post. I ended up reinstalling Windows 10 to the external SSD due to being unable to even get Windows started earlier, without even having the eGPU attached. I followed this guide, which has worked perfectly for me, 100% of the time - 

Now I've got everything working perfectly!

Main things to do - in macOS, install rEFInd. Download EFI manager( https://www.tonymacx86.com/resources/efi-mounter-v3.280/), so that you can mount the EFI partition. In that, EFI disk -> EFI folder, create a folder called custom, and put apple_set_os.efi in that folder. From now on, in rEFInd, this script will appear BEFORE the macOS logo. After doing this, follow this guide EXACTLY -  https://egpu.io/forums/builds/2016-15-macbook-pro-rp460-gtx1080ti32gbps-tb3-akitio-node-macos-windows-10/.

Every time you restart with the intention of booting into windows, after having run integrated.bat, you basically select the first icon which runs the script, and then select the icon before the Windows logo. I will edit this post with the exact name that appears for me when I'm done posting. I didn't need to do any DSDT editing etc, the guide I linked to above worked perfectly! You're very close to the finish line!

Added pictures. One shows the EFI Manager app, one shows the exact path for the os set file, one shows the script icon before OS X icon, and one shows the icon to select for booting into Windows after having run the aforementioned script.

Note : I do not have internal LCD acceleration by the eGPU, internal LCD is still driven by the iGPU. However I don't need internal LCD acceleration as I plan to game on external monitor in Windows.

Also, I don't plan to use the eGPU in macOS at all, so the only eGPU related thing I have done in macOS is installing rEFInd and adding the os set file to the EFI mounted drive in the correct place.

I'll try and post my implementation step by step guide tomorrow night, it's 6 am and I need to sleep! 

Can confirm that I'm in good shape after following these steps. Beyond what's above and in the associated guide, I had to disable the PCIe bridge for both the R460 and USB 3.1 to free up enough resources for the eGPU. Thanks for the help guys!

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


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rushvora
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June 24, 2017 4:43 am  
Posted by: rawweb

I've followed the steps to the letter and at least have the Intel HD 530 now showing up. 

No dice on the RX 580, still showing Code 12 and no display on my Apple Cinema Display connected to it. I've even disabled the dGPU lane. This is maddening!

Honestly imagined getting this to work on MacOS to be harder than Windows. 🙁

Damn.. AFAIK AMD GPUs are trickier to get working in Windows on MBPs for some reason.  And yeah.. it is maddening. I spent way way more time getting the setup to work than anticipated! I'll post my implementation stuff when I get a chance. Hopefully someone else gets a RX 580 or similar working in a similar setup like yours.

late-2016 15" MacBook Pro RP455 + [email protected] (Mantiz Venus) + Win10 // external SSD


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tmitrovi
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June 25, 2017 12:46 am  

BTW, after everything worked I re-enabled the PCIe bridge for USB 3.1 and everything still works, even after reboot. So the only thing that's disabled in my implementation is the Radeon.

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


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rawweb
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June 25, 2017 2:34 am  
Posted by: tmitrovi Can confirm that I'm in good shape after following these steps. Beyond what's above and in the associated guide, I had to disable the PCIe bridge for both the R460 and USB 3.1 to free up enough resources for the eGPU. Thanks for the help guys

Sure wish I could say the same...been at it for days. I've tried everything in the book short of Clover. 🙁

What specific eGPU are you using and what GPU? Is it AMD? 

EDIT: Seemingly magic, I came down for a quick last ditch try this morning and to my amazement my ACD came to life at the windows login screen! It's hard to say what exactly did this, as I've literally tired every option in the guides. I'm bit afraid to reboot...lol. I'll try to dissect using Winclone, a new install, and write an implementation guide for folks trying to get an RX 580 working with Windows 10/L2016 15" MBP.

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


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Rohiz
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June 28, 2017 2:31 pm  

This guide worked perfectly with my 15" Macbook Pro 2017 with AMD 560 and Mantiz Venus with EVGA Nvidia 1080 Ti GPU with an external display- so thank you!!!!!!!  however, after installing the intel drivers my internal display on the macbook pro- freezes at the windows log in screen and I am unable to disable the monitor or lower the brightness- anyone else run into this issue and have a solution?

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


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lukicharms
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July 13, 2017 1:46 pm  

I ran the efi boot through a USB with a  Bootcamp partition (Windows 10) and was successful in installing nvidia drivers and Running my GTX1080TI with my Macbook Pro 2016 15" AMD 455. However, under device manager both my AMD455 (internal gpu) and GTX1080Ti (eGPU) show and I could only get my GTX1080Ti to be used if I disable my AMD455 (iGPU). Disabling my internal GPU turns off my Macbooks display. How can I get the internal display working with my GTX1080Ti?

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


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zlanich
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July 14, 2017 4:36 am  

I had this all working, and can no longer get Windows to recognize my eGPU as a Display Adapter (reFind + Spoof OS or apple_set_os.efi). Can someone please take a look at my thorough post over here and see if they can help? 🙁

 

https://egpu.io/forums/builds/late-2016-15-macbook-pro-rp460-gtx1080ti-fe32gbps-tb3-akitio-node-win10-konceptz-no-os-modifications/#post-15088

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wingman9
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July 15, 2017 10:58 pm  

I used my EFI boot usb stick a couple times successfully. Then, I had a large Windows update. After the update, I could still boot with the EFI key, but no igpu detection. I rolled back Windows and this seemed to restore igpu detection using the EFI stick.

Now (just today), when I boot holding option and select EFI boot, my machine automatically boots into OSX. Has this happened to anyone else? I tried formatting the usb stick and recreating the drive, but that didn't work.

My machine is a late 2013 MBP with iris graphics. eGPU is Mantiz venus with evga 1080ti.

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


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EdOu
 EdOu
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July 18, 2017 1:38 pm  

Hi guys, I have followed the implementation on the website and successfully enabled the GTX 1080 in razer core working in external display on a MBP.

However, when I disconnect with external screen with the core connected, I found the internal screen is still accelerated by the RP460 card. Attempted to disable RP460 resulted in the internal screen completed black and have to restart the system to get it back to work again. May I have some suggestion about enabling  a GTX 1080 in internal display? Thanks a lot 🙂

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


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lungguy
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July 24, 2017 2:54 am  

Need some help.

I have been using the boot via USB solution for a couple days and it has been fine. Just hold option and click the jump drive and it boots into windows with my display on and I start gaming and all is good. However, now when i click that icon it just boots into macOS, I'm not sure why. It seems like my eGPU isn't being recognized all the sudden. I'm using all the same ports and everything

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lungguy
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July 24, 2017 3:51 am  
Posted by: wingman9

I used my EFI boot usb stick a couple times successfully. Then, I had a large Windows update. After the update, I could still boot with the EFI key, but no igpu detection. I rolled back Windows and this seemed to restore igpu detection using the EFI stick.

Now (just today), when I boot holding option and select EFI boot, my machine automatically boots into OSX. Has this happened to anyone else? I tried formatting the usb stick and recreating the drive, but that didn't work.

My machine is a late 2013 MBP with iris graphics. eGPU is Mantiz venus with evga 1080ti.

@wingman9 Did you ever fix this issue? I'm having the same thing where my EFI boot drive throws me straight into windows. Very frustrated.

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


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jatechnology
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July 24, 2017 10:40 am  

lungguy, use Startup Disk within macOS to set Windows as primary boot OS. This should get Windows OS booting from your apple_set_os.efi drive. This is how i fixed this issue with my Mac.

I have yet to list my system & eGPU hardware or link a build guide in my signature. I will do so soon to give context to my posts.


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ed_co
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July 31, 2017 10:32 am  

There is no mention about the macbook pro retina 15" early 2013, which has a GT650M card, I am not sure if it is possible to use your method with this one. Could anyone confirm.

I have this one, and a GTX 1080, and I would like to know if I can do it via this method, or not. I will start a thread with my rig soon. In mac works pretty good, but I have several thing to solve/understand first too.

With nando's custom script, it is a requirement to have a MBR partition, which I don't have, and I don't want to change it to it, unless there is no choice. That's why I would like to try everything before.

Thank you very much guys.

mid-2017 Macbook Pro RP560 + MSI GTX 1080Ti Gaming [email protected] (Mantiz Venus) + macOS10.13 & Win10


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nando4
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July 31, 2017 10:50 am  
Posted by: ed_co

There is no mention about the macbook pro retina 15" early 2013, which has a GT650M card, I am not sure if it is possible to use your method with this one. Could anyone confirm.

There is mention of a GT650M MBP in the opening  post as probably incompatible:

The following are likely not UEFI 2.0 compatible for apple_set_os.efi to work.  See linked discussion with inconclusive results.

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table    •    Several builds
2018 14" HP Elitebook 840 G5 i5-8350U 16GB 512GB + GTX 1080Ti @ 32Gbps-M2 (ADT R43SG) + Win10


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ed_co
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July 31, 2017 10:56 am  
Posted by: nando4
Posted by: ed_co

There is no mention about the macbook pro retina 15" early 2013, which has a GT650M card, I am not sure if it is possible to use your method with this one. Could anyone confirm.

There is mention of a GT650M MBP in the opening  post as probably incompatible:

The following are likely not UEFI 2.0 compatible for apple_set_os.efi to work.  See linked discussion with inconclusive results.

Yep, I have seen, but specifically for 2012 version, not the 2013 one... Maybe there is a chance...

mid-2017 Macbook Pro RP560 + MSI GTX 1080Ti Gaming [email protected] (Mantiz Venus) + macOS10.13 & Win10


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snowboardpunk
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August 6, 2017 11:56 pm  

I'm having trouble installing apple_set_os.efi. I'm using the method where I'm trying to use this method

Usage:

Copy the apple_set_os.efi binary (download it from releases) to EFI System Partition (ESP) :

mkdir /boot/efi/EFI/custom
cp apple_set_os.efi /boot/efi/EFI/custom

rEFInd should automatically show a new icon for apple_set_os.efi.

 

I have rEFInd installed on the mac side, but not sure exactly how to run those commands. They don't work in terminal (mac) or command prompt (windows). I'm following this guide https://egpu.io/forums/builds/2016-15-macbook-pro-rp460-gtx1080ti32gbps-tb3-akitio-node-macos-windows-10/ and have my amd drivers uninstalled.

I don't know if this changes anything but I'm running bootcamp on an external ssd. I'm sorry in advance but I'm not very computer savvy.

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


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ChickenTopRamen
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August 11, 2017 6:20 pm  

Hello! So I've been working on trying to get my set up to work for quite some time now and I feel like I want to return my node back but I also feel like I'm almost there!

I have  a Mac'15 (MID2014) with an AkiTIO Node + AMD RX290 connected to my mac via tb2 to tb3 adapter. I have no problem running the egpu on MACOSX, just some issues in regards to not being able to hot plug and needing to turn of my mac completely before shutting it down. I understand that Mac versions from 2014 and down do not support hot plugging (or correct me if i'm wrong please =]).  In regards to Windows, when the thunderbolt connection is plugged in before i boot  up, I will see the windows sign for about 2 seconds and the screen completely turns off. I have downloaded the drivers on Windows by checking showing hidden devices. 

 

https://egpu.io/forums/mac-setup/how-to-keep-mbps-irisiris-pro-activated-when-booting-into-windows-boot-camp/

So I came across the link above me (goalque's post)  in this forum and I am having a bit of confusion trying to implement the usb drive. 

1. Format an USB stick in Disk Utility (Choose Erase, Format: MS-DOS (FAT), Scheme: Master Boot Record)

2. Create a USB stick folder structure in Finder as follows: /EFI/Boot/bootx64.efi where bootx64.efi is the renamed apple_set_os.efi file downloaded below.

https://github.com/0xbb/apple_set_os.efi/releases

I am having a hard time understanding the second part of the section. Once I format the usb, am I suppose to make a folder inside of the usb and rename it to /EFI/Boot/bootx64.efi and rename the apple_set_os.efi file into bootx64.efi? 

 

So far this is the farthest I've gotten and I am stuck on this step. Help would be much appreciated and thank you everyone for all your contributions! 

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


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theitsage
(@itsage)
Famed Member Admin
Joined: 2 years ago
Posts: 3675
August 11, 2017 7:54 pm  

@ChickenTopRamen your interpretation of the instructions is correct. Format the USB drive then create "EFI" folder at the root level of the USB drive. Proceed to create "Boot" folder inside "EFI". Drag the "apple_set_os.efi" you downloaded into this "Boot" folder then rename it to "bootx64.efi".

Once this is complete, make sure the Boot Camp partition is the default boot volume in System Preferences. Restart your Mac and hold down the OPTION key at boot to load the boot selector. You'll see the "EFI Boot" at this screen so that you can select to boot from it. If all goes well, you'll boot into Windows with both dGPU and iGPU running.

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