There are two encryption options: 126-bit AES encryption and 256-bit AES encryption. In the dialog box that appears, choose a location to save the. Select the folder you want to lock with password and click the Choose button. From the menu bar at the top of your screen, select File > New Image > Image from Folder. To do this, you can click the Spotlight icon in the menu bar, type in Disk Utility and then hit Return/Enter.Īlternatively, go to Finder > Applications > Utilities and find the app. The steps below show you how to do the encryption. It can also work with external hard drives. This method works on macOS Catalina, Mojave, High Sierra, Sierra and earlier versions.
It allows you password protect a Mac folder by turning it into an Apple Disk Image (.dmg) file and encrypting the file. Warning: Regardless of the method you use, it’s important to remember the password you set.ĭisk Utility is a system utility available for free on every Mac.
