Failed to open macOS installer

I was trying to wipe the computer of all my stuff before giving it to my daughter and I guess I also deleted the OS??

When I try to install macOS Sierra through disk utility, it eventually says 'An error occurred while preparing the installation. Try running this application again.' I have tried running first aid first and everything. It was giving me the folder with the question mark for a while and now it's saying 'Failed to open macOS installer'. Any help would be appreciated!

Posted on Dec 21, 2023 09:01 AM

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3 replies

Dec 21, 2023 09:18 AM in response to jbrookes

Try downloading VenturaOS and i really don't think that you can delete operating system while resetting you machine. And if your mac cannot support Ventura try Catalina maybe this would work for you all the best and if it doesn’t let me know what error you machine is showing.


Download macOS Catalina 10.15.7 Update


https://apps.apple.com/in/app/macos-ventura/id1638787999?mt=12



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Failed to open macOS installer

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