The simple solution is to delete the macOS Catalina installer and download a new copy.ĭisk Utility’s First Aid should be run to ensure the startup drive and the target drive do not have any issues that could impact installing macOS Catalina.Ī new installer will usually take care of the issue, but there’s another problem that could lead to the same message: a damaged target drive for the installation. This message (or a variant) will sometimes show up just after you start the installation process, and is most often caused by a corrupt installer file. Upgrades Guaranteed to Work With Your Mac.OWC has you covered if you need to go this route: ![]()
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