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I am trying to install Mojave - upgrade from High Sierra


After a long download I get and error message that the installer is corrupted. I have deleted this installer and tried to do this twice same result

iMac 27″, macOS 10.12

Posted on May 16, 2021 8:04 AM

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Posted on May 16, 2021 8:06 AM

After deleting the installer, try again while in Safe Mode.

How to use safe mode on your Mac - Apple Support

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