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Computer was factory reset but cannot install OS

MacBook Pro 13" 2018 was factory reset but now trying to reinstall OS, it will not let me. I have tried to reset NVRM, but that does not work and continue to see folder with question mark. No firmware password is on and date/time is correct. Every time I try to reinstall OS goes through the process and towards end says error has occurred during installation. Not sure what to do anymore.

Posted on Jan 16, 2021 11:30 AM

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Posted on Jan 16, 2021 5:55 PM

Did you erase the whole physical SSD? Here is an Apple article showing how to erase the physical SSD instead of just the "Macintosh HD" volume:

https://support.apple.com/guide/disk-utility/erase-and-reformat-a-storage-device-dskutl14079/mac


Try running the Apple Diagnostics.


If you still have problems and you have access to another Mac you can try to "Restore" the T2 firmware:

https://support.apple.com/guide/apple-configurator-2/revive-or-restore-an-intel-based-mac-apdebea5be51/mac


Otherwise you may need to have Apple or an AASP examine your laptop and assist you in restoring the OS.


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Question marked as Top-ranking reply

Jan 16, 2021 5:55 PM in response to lpnd1

Did you erase the whole physical SSD? Here is an Apple article showing how to erase the physical SSD instead of just the "Macintosh HD" volume:

https://support.apple.com/guide/disk-utility/erase-and-reformat-a-storage-device-dskutl14079/mac


Try running the Apple Diagnostics.


If you still have problems and you have access to another Mac you can try to "Restore" the T2 firmware:

https://support.apple.com/guide/apple-configurator-2/revive-or-restore-an-intel-based-mac-apdebea5be51/mac


Otherwise you may need to have Apple or an AASP examine your laptop and assist you in restoring the OS.


Computer was factory reset but cannot install OS

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