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Level 1

4 points

Anyone can help?

A prohibitory symbol, which looks like a circle with a line or slash through it, means that the selected startup disk contains a Mac operating system, but it's not a version or build of macOS that your Mac can use. But now the Mac doesn’t want to work

Posted on Apr 17, 2020 1:54 PM

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Level 4

1,097 points

Posted on Apr 17, 2020 3:00 PM

Boot to the Recovery Partition by holding Command R when starting your Mac

Select install macOS

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