How to Burn a DVD on a Macintosh With Encryption

Your Macintosh has built-in tools for encrypting files and burning them to DVD. It is not possible to encrypt the DVD itself. Instead, store the files you wish to protect in an encrypted disk image, then burn that to DVD.

Instructions

1. Open the Disk Utility application in your /Applications/Utilities folder.

2. Select the "New" command in the File menu, then "Blank Disk Image" from the submenu.

3. Set the size of the new image to 4.6 gigabytes, then change the "Partitions" menu from "CD/DVD" to "Hard disk." Choose 128-bit AES encryption. Set the image format to "read/write disk image." Type in the name of your disk image and click "Create." You will be prompted to enter a password for encryption. The disk image will be created on your hard drive with a ".dmg" file extension, and a new device will appear in your Finder sidebar that displays its contents.

4. Drag the files you wish to encrypt and burn into the new device's Finder window, in the same way you would to copy these files to any other external disk. The files will copy to the disk image.

5. Click on the "Eject" button next to the drive image's entry in the Finder window sidebar.

6. Insert a blank DVD into your DVD drive. It will appear on your Desktop as a blank disc.

7. Drag the ".dmg" file to the DVD icon, then right-click or control-click on the DVD icon and click "Burn." Allow the burn operation to complete. When you insert this DVD, the ".dmg" disk image file will be visible to everyone, but it will require your password before it can be mounted and used.

References

• Mac Help (built-in): Creating a blank disk image for storage