Bootmanager broken?
Hi,
I'm using a late 2012 Mac mini. My problem is, that I can't get into the Startup Manager and boot another hard drive.
What I've tried so far:
- reseting NVRAM and SMC
- multiple wireless and wired keyboards
- bypassing the Startup Manager by using abdyfranco's Boot Manager
- reinstalled macOS
background: I'am trying to install Windows 10 on the second internal hard drive via Boot Camp but it seems the Mac fails booting the install routine as it results every time in a black screen
Mac mini, macOS 10.15