Hey Dmitry! Long time no see!
As I was busy with work and didn't want to risk anything happening to my computer at that time I jsut let the issue rest. However, today I have followed your advice to used the gdisk software to create a hybrid MBR, and it worked fine for my mac OS partition as it now shows itself as GUID partition again and Parallels managed to finally detect and install, but there were also some unwanted side effects.
The first being that despite the hard drive now being formated correctly macos does not want to update the software because of a missing firmware partition (wth?):
View attachment 14788
(Installation on this volume is not possible, because the computer is missing a firmware partition), whatever that means.
The second being that the bootcamp partition, well, it didn't take it too well:
View attachment 14785
Furthermore while Parallels seems to have isntalled correctly I think it got confused and tried to install both a windows and macos parallels, both of which are currently failing to work because of obvious reasons:
Windows Parallels:
View attachment 14786
MacOS Parallels:
View attachment 14787
I will now try to first work around on how to solve that missing firmware partition problem and then look on how I can repair my bootcamp partition. One step at a time, but at least getting my OSX partition back to showing as GUID again was a huge leap already so thanks for that!
I just wanted to let you know how it worked out and that there are some minor side effects to doing that.
Cheers
Nick
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