![]() ![]() Launch Disk Utility, located at /Applications/Utilities.ĭisk Utility’s default settings use a sidebar that only displays storage volumes. If you’re working with OS X El Capitan through macOS Sierra, you may find the instructions in How to Use macOS Sierra Disk Utility to Verify or Repair Disks a better fit.ĭisk Utility’s Sidebar in macOS High Sierra and Later The Disk Utility app underwent a few updates with the release of macOS High Sierra to support the APFS file system. If you’re using First Aid as part of a routine maintenance program, you should still have a working backup of any volume that you’ll be checking. We’ll start by going through the actual process of using First Aid, and then take a more in-depth look at the process we’ll also provide a few troubleshooting tips.īefore you use First Aid, make sure you have a current backup of the drive or volume you’re having issues with. Related article: How to Revert a drive from APFS back to HFS+ First Aid can actually be used on any file system that macOS supports, but APFS and HFS+ are the most popular, and the ones you’re most likely to encounter. In this guide, we’re going to take a look at using Disk Utility’s First Aid tool in macOS High Sierra to repair APFS and HFS+ file systems. ![]() Drives unmounting or ejecting on their own.Included as a standalone app with the original Mac OS, it was later folded into Disk Utility when OS X was released.ĭisk Utility, and its First Aid system remains the first line of defense for drives that are experiencing a number of issues, including: ![]() Disk First Aid, currently part of Disk Utility, has long been the go-to utility for verifying and repairing a Mac’s storage system.
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