Mac mini can't reinstall MacOS
Hello,
Mac mini i7 (12 cores) SSD 512Gb
MacOS 11
When I started the update to MacOS 12 I get a message: Unable to verify macOS.
After several times I had no choice to restart with Command R and initialize the internal SSD and reinstall macOS.
The system start install macOS Mojave but I get the same message.
Then I install macOS 12 on an external 256Gb SSD from my iMac and I can boot on it.
When I want to boot on it from the Mac mini it says that I am not allowed to boot from an external device. I am not sure about FileVault on this Mac, but I think it's off and it never ask me any password.
When (on the recovery mode) I select the wifi, it never accept the password (sure and test on different devices), I had to suppress the wifi password in my router to be accepted by the Mac mini = another issue during the recovery.
When I try to install MacOS from the recovery mode (after re-initialize the external SSD), I get the same message: Unable to verify macOS.
It tried to install Mojave and not the latest macOS probably because this Mac was build at that time.
I get the same message with the internal SSD as well.
When I start with D key pressed the diagnostic don't find any failure.
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This url does not exist.
What should be the next step?
Thanks for your help
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