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Thanks for this feedback also. Followed you KISS advice ;-)

For other Big Sur EX58-UD5 owners with a RX570/580 installed, find attached a working OC 0.65 config. Hopefully it helps to bring others up to speed with their EX58. Issue that I've still open (but discussed somewhere else on this forum): - Hot-swap USB - Memory Error message - Bluetooth...

I'm struggling with the physical layout translation to CustomMemory.plist for my EX58-UD5 My configuration is indicated with the arrow. Below my memory conflig, still causing the message "memory modules misconfigered", which is well possible. <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE...

Thank you for your detailed response. As a newbie I re-used my clover config.plist early Dec 2020 and it initially booted with opencore. I only realized 2 days ago that I messed up this config and started all over again with a clean opencore plist reusing the details I already had obtained with...

I can use some expertise from the experts. My goal is HEVC/H264 encoding support in FCPX (10.5) and the RX 570 is being recognized as such in FCP as render/share GPU) with the RX570 and EX58-UD5 via OpenCore. System is stable and recognizes the card without problem in Big Sur. All kexts are up...

Thanks for the tip. That did the trick. Feels like a bug. Using the same procedure, BootInstall_X64.tool came up with the question: Do you want to write a new MBR y/n? I did not get that message on my legacy platform. Nevertheless maybe useful for other Legacy Users struggling to get OC MBR...

No, it did not give an error. Big Sur was indeed installed via an external Macbook and not via this platform. Good tip, but strange that this is happening.

I installed Big Sur and was booting from my harddisk without problems with Clover. Decided to create an OC bootable USB stick, because I needed to access non supported SATA drives again. Everything worked out and I was able to make it all work. Booting OC from USB was and is no problem...

After too many hours of experimenting, I have my machine working on Catalina. Some issue still.. Can't upgrade catalina, old SMBios definition (MacPro4,1) and maybe Kext installed that are useless. A Gigabyte EX58 bios upgrade to F13 brings new challenges. Downloaded the correct DSDT.aml and...

Thanks for the info. Good to hear that there is a way forward. I will start this way

Just updated my profile (again) -> Intel i7 cpu 920. Meanwhile I tried to create a APFS bootable Catalina installation SSD drive including the correct (and updated EFI) from my booting Sierra Drive. Tried to boot from this disk, but this is not bootable. Booting afterwards in Sierra than this...

Sorry for the lack of details.. Indeed my config is in my profile, but meanwhile I upgraded to a SDD. Added the current clover details for more details

Whatever I do with different OSX versions and patches (dosdude), I still get the You may not install this volume because the computer is missing a firmware partition Message. I updated clover, added the suggested keys, upgraded the firmware of my SDD drive, but still the same message. Tried...

Forgot to tell you that everything works great after adding Multibeast Configuration: -Drivers>Audio>Realtek ALCxxx > ALC885/889a -Drivers>Audio>Realtek ALCxxx > Optional HDAEnabler > Audio ID: 1 The last line was not in during my initial setup..... and is needed otherwise you don't see any...

Working on my Yosimite installation. Downloaded the latest the uni & mulitbeast and installed Yosimite without real issues. Last step was to add Network (although this worked already from the start) and Audio as documented for my previous installation. Needed drivers for my Gigabyte EX58-UD5...

Although everything else is working perfectly, I recovered my system from several kext attemps. Currently I don't have any ALC889a or AppleHDA kext installed. I think I need some help to get audio working. Can anybody confirm that this is not an issue with Bios F12 ? If not, can you help me by...