Create Image For Mac Os X
If the disk image will be used with a Mac that has a solid state drive (SSD) and uses macOS 10.13 or later, choose APFS or APFS (Case-sensitive). If the disk image will be used with a Mac with macOS 10.12 or earlier, choose Mac OS Extended (Journaled) or Mac OS Extended (Case-sensitive, Journaled).
The resulting disk image will be saved as the familiar.dmg format, which has a number of potential uses ranging from creating a drive clone for backup purposes, restoring the image elsewhere as a bootable backup, or even for deploying the same Mac OS X installation on multiple machines. Do not select the disc itself (labeled 'Mac OS X Server Install Disc'), or the resulting image will not be usable. Click the New Image button in the toolbar. Figure 1: Steps 3 and 4: Select the optical drive and choose New Image. Give the disc image a name.
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Looking for a way to encrypt a folder of sensitive data on your Mac? Word 2016 for mac change footnotes from roman numerals. You could, but this may be overkill for most people. Luckily, OS X has a built-in feature that allows you to create an encrypted disk image containing whatever data you want inside the image.
The only way to open the disk image is to enter the password. You can copy the disk image like a normal file and it will be unreadable unless unlocked on a Mac. Overall, it’s like creating your own encrypted file container.
Also, be sure to check out my article on how to, which is another good way of storing sensitive data. Create Encrypted Disk Image To create the disk image (DMG) on your Mac, first create a folder that includes all the data you want to encrypt. 
Note that once you create the disk image, the original unencrypted folder will still remain on your system and you should delete it immediately. To get started, go ahead and open Disk Utility by going to Applications or by clicking on the Spotlight icon (magnifying glass) at the top right and typing in Disk Utility.