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macOS 10.15.6 will not install catalina
Mac mini, macOS 10.15
Try downloading and applying the macOS Catalina 10.15.5 Combo Update. It can be more reliable than going thru the System/Software Update preference pane.
Try downloading and applying the macOS Catalina 10.15.5 Combo Update. It can be more reliable than going thru the System/Software Update preference pane.
There could be a myriad of reasons.
What messages do you get that indicate that it won't install?
macOS 10.15.6. will not install
