Thanks @eric_tank for trying and sharing your Big Sur Experience. i'll wait for your next update. 😉
2018 mac mini i5 + sonnet 550 + vega 56
2018 Mac Mini [8th,6C,B] + RX Vega 56 @ 32Gbps-TB3 (Sonnet Breakaway 550) + macOS 10.14 & Win10 // external ssd [build link]
@erik_tank, Hi Erik I am one of those who has suffered from the new update of MacOS Big Sur, I have upgraded to this version innocently and I do not work my windows 10 from my portable hard drive + egpu, I use a portable disk for the simple reason that I want to separate the matter from gaming. It should be mentioned that I have the latest version of Windows 10, I am downloading version 1903 on a link that I found. How do I do a downgrade for Windows?
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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@erik_tank, Hi Erik I am one of those who has suffered from the new update of MacOS Big Sur, I have upgraded to this version innocently and I do not work my windows 10 from my portable hard drive + egpu, I use a portable disk for the simple reason that I want to separate the matter from gaming. It should be mentioned that I have the latest version of Windows 10, I am downloading version 1903 on a link that I found. How do I do a downgrade for Windows?
Sadly - you have to find a version 1 release of 1903 - the available 1903 from MVL or such already has patches applied you cannot undo.
There is no way to downgrade windows that I'm aware of - it's a tedious start over process I'm afraid. Maybe someone else can confirm my assumption or provide more details on a downgrade process via ISO medium.
Is this an issue with AMD?
I am running Windows 10 20H2 on 2018 MacBook Pro 15, i9 with Nvidia RTX 2080 without problem. I have updated to latest Big Sur already. I am running Windows on external TB3 NVMe drive.
MacBook Pro 15" 2018
MSI Ge Force RTX 2080
Akitio Node
Windows 10 20H2 / Akitio Node Lite / Samsung SSD 970 EVO
@chocomonsters, yes these are AMD conflicts when the Mac has AMD and the eGPU has AMD as well. NVidia doesn’t have this conflict but doesn’t work in MacOS... so it’s a trade off.
@erik_tank, Spent some time fiddling again with no luck with newest Windows 20H2 and a few of the options on this site (minus custom efi.) I won't take a risk to hack efi or go down the custom boot loader option. I'm not certain this is possible at this point. i don't -need- Windows, I have some games I would like to try is all. I can't play them in VMWare nor do they seem to work well on the eGPU in macOS (those that have a port.)
Trying to find some other options.
MacBook Pro 16 2019 - i9 2400, 32GB memory 5500m - eGPU Razer Core X Chroma with RX580
@chocomonsters, yes these are AMD conflicts when the Mac has AMD and the eGPU has AMD as well. NVidia doesn’t have this conflict but doesn’t work in MacOS... so it’s a trade off.
I'm not sure that entirely sums it up, as MBP 13" without AMD dGPU has similiar issues with AMD eGPUs?
To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.
.i've finally did it, with big sur and windows 1903 build 18362.1082 on external ssd with pci.sys swap. as long as i keep hdmi cable unplug on mac mini's hdmi socket is fine, no error 12
2018 mac mini i5 + sonnet 550 + vega 56
2018 Mac Mini [8th,6C,B] + RX Vega 56 @ 32Gbps-TB3 (Sonnet Breakaway 550) + macOS 10.14 & Win10 // external ssd [build link]
Anyone know where to get this magical 1903 v1 build that seems to work for everyone?
MacBook Pro 16 2019 - i9 2400, 32GB memory 5500m - eGPU Razer Core X Chroma with RX580
To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.
.