If I out in the old drive, I am able to start the computer normally. I tried all the steps above with a USB keyboard but still haven't to. I tried installing Macos on a USB drive but when I press option during startup- it tries to startup as normal. I tried resetting the NVRAM with command + option + P+ R - again this does NOT restart the computer during startup as it's suppose to. When I press command + R - it does nothing and tries to start up as normal. After the recovery mode has load I get the prohibitory symbol and can't get to dial utility! When I use the SSD the only option I have is to put the computer into internet recovery mode us OPTION + COMMAND + R. Mac startup key combinations not working? Ive tried upgrading the RAM and the SSD of my 2012 MacBook Pro, running MacOS Catalina.
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