What you need to do is restart and keep shift pressed down for ages until it prompts a login the login then restart again and hold down opt, ctr, R until the recovery mode shows after like a 4 min wait and then you see the Apple logo then you have to click install Mac OS bit and then Mac OS Catalina shows I was stuck on mountain lion for agessss and stayed up so late
@@discoveries9476 No worries, and I stumbled upon it on Google and was thinking “no way it’s that” but I was trying to fix it for hours and then it actually worked 😂