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Hard drive suddenly unformatted, can’t get macOS to load

I just updated my machine with the latest update. After restarting my iMac keeps loading windows through boot camp. I can’t get into my Mac. When I look at the hard drive using disk utility, there is 1.7TB that is unformatted while the other 300 is for windows.

Does anyone know how to fix this? I ran first aid repair and it was completed without any errors.

iMac 27″, macOS 11.6

Posted on Oct 18, 2021 2:04 PM

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Hard drive suddenly unformatted, can’t get macOS to load

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