Now, this may seem logical to some people, but it might not be desired. So if you created an image that was 500MB in size, then the image file would be 500MB, even if there is only 90MB of data in it. However, you’ll notice that even if you don’t fill the 500MB image size, i.e if you enter less than 500MB of data, the image size will still be the same when you created it. Once created, the image will create and mount where you can copy files to it. Once you’re done tweaking the settings, click on “Create.”.(Tidbit: You can also encrypt your disk image here by using the “Encrypt” tab.) For this tutorial, we’ve set it as 500MB, but you can set a size according to your own preferences. Here, you can name your image and set its size. Select “New Image” from the top row of options in Disk Utility.Ī drop-down menu similar to the one below will show up. Open Disk Utility on your Mac, either by accessing it by Spotlight or by navigating to “Applications -> Utilities -> Disk Utility”. To create a Disk Image on your OS X system, simply follow the steps below: The server option is most useful if you want to encrypt your files so that no one else can access them. Disk Images are indeed most useful for file distribution, but they can also be used to store files on your system, any external media or on a local network server.

Best mac os x utilities