Unable to install High Sierra

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pk25


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I'm unable to install High Sierra on my MacBook Pro, mid 2012.

The last message from the installer file says:Apples-MacBook-Pro.local osinstallersetupplaind[391]: No native mechanism to verify AppleDiagnostics.dmg.

Any ideas?
 
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gsahli


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late 2012 mini w/SSD
Never heard of that error before. Where did you get the High Sierra Installer? Why does it say AppleDiagnostics.dmg? That's not the installer.
 
ferrarr

ferrarr


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M1 Mac Studio, 11" iPad Pro 3rd Gen, iPhone 13 Pro Max, Watch Series 7, AirPods Pro
Have you tried to run Disk Utility > First Aid, on the drive?
 
pm-r

pm-r


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