MacBook air restore
Question mark sign at start up
This happened when I tried to restore the factory setup as a step before upgrading.
Question mark sign at start up
This happened when I tried to restore the factory setup as a step before upgrading.
Please see Apple’s advice in https://support.apple.com/en-us/HT204323
Please see Apple’s advice in https://support.apple.com/en-us/HT204323
MacBook air restore