Select the one you need, which will open a new dialog box where you enter and verify your password. 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.
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