It’s important to password protect folders on your Mac OS X El Capitan that have important information and files. Being able to get these files locked with secure password will prevent someone from getting access to these files. There is no need to purchase a third party software to password protect your folder on a Mac because you can do it for free with encrypting a folder with Disk Utility.
The best way to password protect folders on your Mac OS X El Capitan for free is by creating an encrypted image and then mount the folder as a virtual disk. When you use encryption to the image, Mac OS X El Capitan will ask for you to enter a password to mount the image. The following are step-by-step directions on how to password protect folders on Mac.
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Password Protect Folders on Mac OS X El Capitan:
1. Open Disk Utility under “Applications/Utilities”. Go to “File/New/Image From Folder”.
2. Go to the folder you want to password protect and select “Image”. From the next window select the image format as “Read/Write”, and encryption as “128-bit AES”. Click “Save”.
3. Type in a password, or click the “Key” icon to generate automatic password. Make sure you uncheck “Remember Password”. Click “OK”.
4. The encrypted disk image will then be created. Double click the image to open it, and enter your password. Don’t select “Remember my password.”
5. The disk image will mount in Finder and you can move and remove files and folders to the image like you would any other folder.
6. When you’re finished using the folder click the “Eject” button so it’s protected again.