Something goes wrong here and I can’t figure out why. First there was an issue getting High Sierra on the machine from online recovery but that was fixed by changing the download url in nvram from https to http.
Then there was the issue that OCLP 2.0.2 couldn’t write the Sequoia install to my USB drive(s) which I worked around with by using my MacBook Pro.
After that I build and installed OCLP to the usb drive on the iMac, selected OCLP and then chose for the USB drive to install Sequoia. So far so good I assume.
After ‘12 minutes left’ the iMac reboots to a black screen with a back button, an off button and a frozen mousecursor. At this point I can’t do anything expect reboot to OCLP and then an “install sequoia” “SSD” of the regular USB drive again.
First option brings me back to the described black screen, second gives a big No logo and the third only gives me the option to start the installation again (recovery).
Any ideas or tips?
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