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kikikiki1999 Author

Level 1

4 points

Reinstalling OS

Ok so I messed up trying to downgrading from Catalina to Mojave. I probably touched wrong spot on HD. I also deleted OS which was running at the time, Catalina.

Now when I restart with command + R, I can’t even re-download Catalina. No time machine, only iCloud backup. I don’t mind starting clean, most likely that’s the only option anyway. I really didn’t like Catalina but right now I just want a running machine so if I can find a way to reinstall Catalina it’d be great. Mojave preferred. Pls help!!

I have another MacBook (2018) and MacBookPro with Sienna.

Thank you very much for your help.

MacBook Air 13", macOS 10.15

Posted on Jan 9, 2020 6:38 AM

Top-ranking reply

Ella Fitzgerald

Level 6

11,815 points

Posted on Jan 9, 2020 6:45 AM

You can create bootable installer of the OS that you want (check this out How to create a bootable installer for macOS - Apple Support) and install operating system to the crashed Mac.

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Reinstalling OS

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