Troubleshoot Crashes and Boot Issues

App Crashes and Force Quit

when an app is busy or processing a complex request, the spinner waiting cursor will appear and disappear again within a few seconds. When an application fails to continue to respond it can be forced to shut down using the cmd + opt + esc key combination

Recovery Menu

The macOS includes a set of utilities that you can use to restore a Mac from the time Machine backup program, reinstall macOS from a system image, or reformat or repair the system disk.