Re installing MacOs Ventura
Hello I’ve been trying to re install my old macOS but it say’s: The operation couldn’t be completed. (com.apple.BuildInfo.prefilght.error error21.)
What’s next after this?
iPhone 8 Plus, iOS 15
Please read the following user tip and restate your question/problem in detail:
Writing an Effective Apple Support Communities Question - Apple Community
What model and year is your iMac?
How much free space do you have on your boot drive?
Maybe one of these will provide insight: com.apple.buildinfo.preflight.error error 21
Thanks to ku4hx