Post originale di: Sebastian ,
I have the same problem. Same Sabrent Drive and same Amazon adapter. I had the folder icon at startup when installing macOS through internet recovery. No I don’t have the folder icon at startup after installing from usb drive. I still have the restarting problem though. It does not seem to be better at a certain version of macOS. I tried High Sierra, Catalina and Big Sur. Same problem. But when I try to restart it still gives me the exact same error message as above. I found a German forum where they seem to have a similar problem. Their suggestion is to unplug from power before restart if I understand correctly. It didn’t work for me though. https://www.macuser.de/threads/macbook-pro-2017-a1708-ssd-upgrade-von-128gb-auf-512gb.865083/page-3 I hope someone will find a workaround!