Install while your Mac is started up in safe mode. Make sure that your Mac has a working and stable internet connection. Check your internet connectionĮven if you're not installing macOS from the internet, the installer needs the internet to get firmware and other information specific to your Mac. If the message recommends a solution, such as to redownload the installer and try again, please try that first. The cause of messages like these can vary, and sometimes they are only temporary. The other solutions here are organized starting with the easiest. The message might say that an error occurred while downloading, preparing, or installing, or that the installer is damaged or could not be verified. If the message says that your Mac doesn't have enough storage space, learn how to free up storage space.
The message might say that an error occurred while downloading, preparing, or installing, or that the installer is damaged or could not be verified. If an error occurred while updating or installing macOS
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