Catalina boot-up issues on some older Macs - moof IT

Catalina boot-up issues on some older Macs - moof IT: There’s been a number of reports Catalina boot-up issues on some older Macs after running the macOS upgrade. After the upgrade process, the affected Macs display a flashing ? on startup. We felt it was important to share this information to help reduce the risk of more people getting stuck with a serious problem. It’s … Continue reading Catalina boot-up issues on some older Macs →