Flashing ? folder issue -
Flashing ? folder issue - I don’t care what I need to do to turn it on as I normally would; is my data lost? It told me to reinstall Mojave but I bought my MacBook Air with Catalina installed and updated to BigSur when it was released?! This was so out of the blue and inconvenient; everything was working perfectly 12 hours ago!
MacBook Air 13″, macOS 11.2