Partition Drives and Format Partitionsĭisk Utility shows internal drives and connected external drives (like USB drives), as well as special image files (DMG files) that you can mount and access as drives. This allows you to use Disk Utility to wipe your entire drive-or repartition it. In Recovery Mode, macOS runs a special sort of recovery environment. It’ll boot into Recovery Mode, and you can click Disk Utility to open it up. To access the Disk Utility on a modern Mac-regardless of whether it even has an operating system installed-reboot or boot up the Mac and hold Command+R as it boots. RELATED: 8 Mac System Features You Can Access in Recovery Mode Or, open a Finder window, click Applications in the sidebar, double-click the Utilities folder, and then double-click Disk Utility. You can also click the Launchpad icon on your dock, click the Other folder, and then click Disk Utility. To access the Disk Utility in macOS, just press Command+Space to open Spotlight search, type “Disk Utility” into the search box, and then press Enter. RELATED: How to Use macOS' Spotlight Like a Champ

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