MacBook air restore
Question mark sign at start up
This happened when I tried to restore the factory setup as a step before upgrading.
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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