I have a prohibitory symbols on my Mac book when staring
I have this symbol on my Mac book when starting up. How do I solve?
MacBook Air 13″, macOS 10.15
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That probably falls under:
"Learn what to do if your Mac starts up to a circle with a line through it (prohibitory symbol)."
https://support.apple.com/kb/HT210901
"A prohibitory symbol, which looks like a circle with a line or slash through
it, means that your startup disk contains a Mac operating system, but it's
not a version or build of macOS that your Mac can use."
As found among others here:
• If your Mac doesn't start up all the way - Apple Support
https://support.apple.com/en-us/HT204156
(manifestation of 'spyware reflection' detected: may be you looking from your mac)