![]() Also, be sure to set a size for the disk image. Make sure to choose either "128-bit AES encryption (recommended)" or "256-bit AES encryption (more secure)" from the "Encryption" menu. In the dialog that appears, you can specify where to save the disk image, the name of the volume, and choose the type of encryption: Open Disk Utility, which is under the "utilities" folder of the "Applications" folder.įrom the File menu choose New > Blank Disk Image. To create a new, empty encrypted disk image in OS X: However, if you create a compressed DMG, it will be read-only, so that may or may not work for you. You can create OS X disk images which are compressed and/or encrypted. If you encrypt your home directory using FileVault, you're creating a spare bundle disk image. ![]() Many OS X applications are deployed on disk images. ![]() A disk image (or DMG file) is a file which, when opened, presents itself as a removable Mac OS X volume, similar to a removable hard drive. Yes, you can do this using the built-in Disk Images of Mac OS X.
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