Anyone else had an internal error when installing Catalina 10.5?

When installing macOS Catalina I received the message "an internal error occurred wiled preflighting your volume for APFS conversion". Anyone know what this means as I am not sure what to do next as it does not offer any fix.

iMac 27", macOS 10.12

Posted on Apr 29, 2020 11:40 AM

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1 reply

i_rina

Community Specialist

Apr 30, 2020 1:38 PM in response to LadyDi284

Hello LadyDi284,

Thank you for using Apple Support Communities!

I understand from your post that that you are receiving the message, "An internal error occurred while preflighting your volume for APFS conversion.", while installing macOS Catalina. For this type of error, you may need to reinstall macOS Catalina using macOS Recovery. This article will provide you with the necessary steps:

How to reinstall macOS from macOS Recovery - Apple Support

Best Regards.

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Anyone else had an internal error when installing Catalina 10.5?

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