If you don’t and someone sits down at your computer when it’s logged into your account, they can open the image simply by double-clicking on it. You’ll also see the Remember Password in My Keychain option.

(If you’re very concerned about security you can choose 256-bit AES Encryption, but as the parenthetical advises, this is more secure but takes longer to encrypt.) If you’re concerned about the amount of space the image might consume, you can choose Compressed from the Image Format pop-up menu, but the image will take a little longer to create.Ĭlick Save and Disk Utility will prompt you to enter and verify a password. In the resulting window select Read/Write from the Image Format pop-up menu and 128-bit AES Encryption (Recommended) from the Encryption pop-up menu. In the Select Folder to Image window that appears navigate to the folder you’ve created.

Choose File -> New -> New Disk Image From Folder. Create your folder full of documents and launch Disk Utility (/Applications/Utilities).

Create password protected folder