From today on I successfully completed Big Sur (DP5 again to check whether it
Error is the Micropatcher 0.19) because I couldn't install the DP6 yesterday.
But today the DP6 has also been successfully installed.
All hardware in the iMac 12.2 mid 2011 27 inches (including Thunderbolt) works.
How do you always say, the bug is sitting in front of the monitor = the person.
The software Micropatcher 0.19 and the DP6 with approx. 12.2 GB is completely ok.
In my posts from 2 days ago, the pictures with the errors are therefore irrelevant.
It is still easy to install, you have to have patience and time. The complete installation
takes 2 hours and 10 minutes ... for the slow old box with rotating 500 GB HDD
and i5 2.7 Ghz processor. About time I install a fast SSD, Sata3 can do the controllers in there.
My mistake was that it did not work to install the DP6 so far, that I had already restarted the boot stick at step 3 in the Barry H. instruction and already (was completely wrong!) Had executed the patch-kexts.sh. This step only comes when the setup installer with region etc. is finished. Then first restart from the USB stick and then steps 3, 4 etc. and step 6 with the removal of all snapshots except the last one.
Then after step 6 there are several restarts (I think 3 times) until the desktop finally appears and then you can start setting up the system.
Apart from the not working graphics support of the AMD Radeon 6570, everything else works.
But I have to say clearly that I am a bit surprised and disappointed that nobody here offered help with my iMac 12.2 in mid 2011. Nobody wants to tell me that nobody here has such an iMac 12.2 mid 2011 running with Big Sur DP6? Should i be the only one very unbelievable. If so, why does nobody write something about it?
Ok you see, I made it without any help.
I just want to encourage those who try it, you really have to READ the instructions that are on Github for the Micropatcher very carefully!