Once complete, you will have a mountable DMG file of your system disk. This will take up to an hour depending on the size of the disk and the speed of your disk drive. I name mine "Snow Leopard Install" since the default "Mac OS X Install DVD" could apply to any OS X version. Disk Utility will create a digital clone of your system disk in the Apple disk image format (DMG) that will then be used to make the USB.Ĭhoose where you want to save the disk image and what you want to name it. Select File > New > Disk Image from (Your System Disk Name) to rip the disk to your computer.Īfter choosing a save location, leave the Image Format as Compressed and click Save to begin ripping the system disk to your hard drive. When you insert the system disk, it will be mounted in the left-side menu of Disk Utility. Go to File > New > Disk Image from…Mac OS X Install DVD (name will correlate to the disk you inserted) and a dialog box will open prompting where you would like to save the disk image. Open Disk Utility and ensure the disk has mounted by finding it in the drive listing on the left side of the app. Insert the system disk you wish to backup into your SuperDrive or-if using a newer Mac without a one-an external disk drive. For this tutorial, I'll be creating a USB backup of OS X 10.6 Snow Leopard. You won't need any special software to digitize your Mac disks, just the versatile app Disk Utility. So what can be done with them now? Read on to learn how to extend the life of your system disks by moving them to a USB drive. The problem is that many people still have software on disks: older versions of OS X, iLife, or iWork. When Apple began ringing the death knell for disk-based media by removing the drives from many of its models, it provided a great digital alternative, the App Store, so users would never need a disk again.
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