While using these suggestions, make sure you have enough permission on the user account for any needed modification. Boot Camp Assistant might stop responding, or installation failed. Startup disk ...

Disk Utility is Apple's go-to macOS app for finding and repairing common disk errors, but if it's your Mac's internal disk that's the problem, then your Mac might not even start up into macOS.

If you've noticed a flashing folder icon with a question mark whenever you boot your Mac, it could be a sign of a serious hardware issue. Here's what to do.