catalina operating system erased from my macbookair
how to reinstall my MacBook air operating system that was running off of Catalina OS
MacBook Air 13″, macOS 10.13
Question marked as
Best reply
dxfbjvzkhjisbxvjklddhfklj Said:
"catalina operating system erased from my macbookair: how to reinstall my MacBook air operating system that was running off of Catalina OS"
-------
Reinstalling the macOS:
Go Here: How to Reinstall macOS from macOS Recovery - Apple Support
Important: First, Back Up your Mac:
Create a Time Machine backup of your Mac, so that you can have something to restore your Mac from, should anything go wrong with the reinstall. Take this as a learning experience, knowing to always create a backup of your Mac, prior to making any major changes to it (i.e. update installation)