Well it was nice while it lasted - EFI Boot options seem to be broken
 
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Well it was nice while it lasted - EFI Boot options seem to be broken  

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Jef Girdler
(@jef_girdler)
New Member
Joined: 1 year ago
 

So this is my first post and I'm having a bit of an issue with my gaming box. I have a suspicion that it has something to do with a minor windows update to troubleshoot some bluetooth issues I was having but I'm probably wrong.

The problem I'm running into is that my system did work just fine for about two months (Gigabyte Gaming box RX580, rMBP from 2015), where you boot with the eGPU attached while holding Alt-Option, select the EFI BOOT partition, boot to windows via that menu and then unplug and plug in the eGPU's TB cable during the windows logo loading screen. The issue is that since last night, if I restart the computer with the eGPU attached, the boot options (Mac, Bootcamp, EFI) never appear. If I boot with it disconnected, select EFI, and THEN plug it in, the whole thing freezes.

What's odd is if I boot into OS X High Sierra with it disconnected, log in, and then plug in the box, it works without issue. I couldn't hotplug it like that before. I'm just not sure what's going on here.

Mid-2015 Macbook Pro 15", 2.2 Ghz i7, 16GB
Gigabyte Gaming Box, RX580
TB2 - TB3 Adapter


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itsage
(@itsage)
Illustrious Member Admin
Joined: 4 years ago
 

Format the automate-eGPU EFI partition then copy a clean EFI folder to it and see if that helps.

external graphics card builds
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2020 13" MacBook Pro [10th,4C,G] + RTX 2080 Ti @ 32Gbps-TB3 (AORUS Gaming Box) + Win10 2004 [build link]  


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omardesu
(@omardesu)
Estimable Member
Joined: 2 years ago
 

You could do what @itsage said and then redo the Bootcamp partition and prevent Windows updates.  If you could get it to work just by redoing your Bootcamp partition, I can help you prevent the Windows updates.

1070 Ti: 2014 Mac mini / 2016 MBP 15"
Mini ITX Build in Dan A4 Case

 
2016 15" MacBook Pro (RP450) [6th,4C,H] + RX Vega 56 @ 32Gbps-TB3 (ASUS XG Station Pro) + macOS 10.14.4 & Win10 [build link]  


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