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.

Clues to the causes of Mac startup problems can be found by analyzing when in the boot process the system fails. Problems may be related to the power supply, battery, hard drive, logic board, OS ...

If your Mac has multiple bootable disks—via either a partitioned internal disk or external FireWire drives—you’re probably very familiar with the Startup Disk System Preferences panel. As you’d guess ...

To restart an Intel Mac in Recovery Mode, hold Command+R when the computer restarts. For Apple Silicon Macs, press and hold the power button until startup options show on the screen. Recovery Mode ...

Forgot your Mac password? 3 ways to unlock startup disks encrypted with Apple’s FileVault Your email has been sent If you forget your Mac's login account password ...

It's easy to make boot disks on old Macs for older hardware, but as the years have gone on, it's gotten a little more difficult. Here's how to make classic Mac OS 9 and early Mac OS X boot media on ...