Issues installing MacOS 11 Big Sur

Question

Issues installing MacOS 11 Big Sur

This has been the worst installing experience of my life: I get an error and can not install Big Sur: "An error occurred while installing the selected updates". What can I do?

MacBook Pro 13″, macOS 10.15

Posted on Nov 12, 2020 3:09 PM

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Answer 1

Nov 12, 2020 3:13 PM in response to Ipanema110___

Reboot and try again launching the installer from a safeboot.

Applications/ "Install macOS Big Sur.app"

SafeBoot https://support.apple.com/en-us/HT201262

Takes noticeable longer to get to the login screen, does a 5-15 minute disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache, etc. Login

Press release states that you will need 35.5 GB of free storage when upgrading from High Sierra or newer, and 44.5 GB when upgrading from an older versions.

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Answer 2

Nov 12, 2020 3:25 PM in response to leroydouglas

Thank you for your reply. I don’t think I have the download, in spite of the error message. I couldn’t find “Install macOS Big Sur.app” in my computer. How can I delete whatever is in my computer and re-download the upgrade? ( I am upgrading from MacOS 10.15.7)

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Answer 3

Nov 12, 2020 3:37 PM in response to Ipanema110___

In all honesty I would wait a day or two and try again.

Not guarantee and might well be for naught, you can delete this plist from your Finder >Go>Go To Folder, copy and paste:

 ~/Library/Preferences/com.apple.preferences.softwareupdate.plist

after you delete this plist, reboot.

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Answer 4

Nov 12, 2020 4:20 PM in response to leroydouglas

Thank you again. I will wait 2 or 3 days and if I can not solve the problem I will talke the mac to an Apple Store and ask for their help. I deleted that file you told me, rebooted, but still got the same error when clicking on “upgrade now”.

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Answer 5

Nov 12, 2020 7:21 PM in response to Ipanema110___

I tried just a few hours later and the upgrade downloaded again and installed without problems.

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Issues installing MacOS 11 Big Sur

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