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Can not update my Macbook Pro 13" Retina Late 2013 Laptop to Big Sur even though I had been running it on this computer for 3 weeks before reformatting.

I was running Big Sur on my Macbook Pro 13" Retina Late 2013 Laptop for about 3 weeks and it was running great. We decided to reformat this older Magbook Pro for my daughter. Once reformatted it will not let us upgrade back to Big Sur. What is up?

MacBook Pro 13″, macOS 11.0

Posted on Nov 30, 2020 4:55 PM

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Question marked as Top-ranking reply

Posted on Dec 1, 2020 4:27 PM

You can install any OS from 10.11 to 10.15 by creating a bootable macOS USB installer using these instructions:

https://support.apple.com/en-us/HT201372


Or you can boot into Internet Recovery Mode using Command + Option + Shift + R to boot to the online installer for the version of macOS which originally shipped with your laptop.


You will need to perform a clean install by first erasing the whole physical drive before reinstalling macOS or you can restore from a backup made before upgrading to Big Sur.

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

6 replies
Question marked as Top-ranking reply

Dec 1, 2020 4:27 PM in response to BCavmechanic

You can install any OS from 10.11 to 10.15 by creating a bootable macOS USB installer using these instructions:

https://support.apple.com/en-us/HT201372


Or you can boot into Internet Recovery Mode using Command + Option + Shift + R to boot to the online installer for the version of macOS which originally shipped with your laptop.


You will need to perform a clean install by first erasing the whole physical drive before reinstalling macOS or you can restore from a backup made before upgrading to Big Sur.

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

Can not update my Macbook Pro 13" Retina Late 2013 Laptop to Big Sur even though I had been running it on this computer for 3 weeks before reformatting.

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