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.

The First Aid feature in Apple’s Disk Utility (/Applications/Utilities) represents one of the oldest and most helpful repair utilities available for your Mac. But ...

A step-by-step guide to fixing a black screen on MacBook Pro or an external monitor.

Learn how to reset MacBook Air PRAM, NVRAM & SMC to fix Mac startup issues. Step-by-step Mac hardware reset guide for Intel & Apple Silicon models. Pixabay, StockSnap Resetting PRAM, NVRAM, and SMC on ...

You are about to transfer some important files from an external drive to your Mac, and suddenly you get the message “Disk Not Ejected Properly” The transfer fails, and you have to start all over again ...

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 ...

New version of Disk Utility can fix "overlapped extent allocation" errors As noted in Knowledge Base article #25770, the version of Disk Utility (10.5.1) included with Mac OS X 10.4.2 can fixed ...

OS X’s Disk Utility—which enables you to format, partition, repair, and perform other kinds of maintenance on disks (including SSDs, flash drives, and disk images)—is good for what it does. Yet for ...

Apart from the default startup disk, Mac computers can be set to start up from a different disk like an external drive, network volume, or a USB flash drive. This article explains the process for ...