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 SET UP:<BR><BR>I have a Mac Pro with two internal hard drives. The first one is partitioned, with a Windows Vista partition and an OS X partition containing the OS, all apps, etc. (The second hard ...

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 ...

There are a variety of maintenance routines that people can run in OS X, including the disk verification and permissions repair that come with the system, along with scripts such as cache cleaners ...

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 ...

Repair Disk isn’t the first option you should choose if your Mac is ailing, but it is helpful when (for example): Performance has degraded Data is missing You are experiencing degraded system ...

I have a Seagate external backup drive that won't mount. Won't repair in Disk Utility, but I can see it's there. Disk First Aid fails with "File system check exit code is 8" Haven't had to go this ...

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 ...

Disk Utility ships with macOS and has been part of the operating system since its first release. Here's how to use it. Disk Utility provides various tasks such as formatting storage devices, mounting ...

Disk Utility is a hard disk management application that comes with the Mac operating system. The software offers a number of hard drive management functions, including the ability to partition and ...