![]() Read/write "sparseimage" disk imagesĪ sparseimage disk image is a type of read/write disk image that grows as you copy files to it. from the Destination selector and locate your disk image. ![]() To back up to an existing disk image, select Choose disk image. If you want a read-only disk image for archival purposes, set the image format to one of the read-only formats. If you plan to back up to this disk image again in the future, set the image format to one of the read/write formats.Provide a name and choose a location to save your disk image.Choose your source volume from the Source selector.In most cases, however, disk images are not a great choice for your backup strategy. If you're backing up to a network volume and your Mac and the NAS device are connected to the network via ethernet, then a disk image may be a good fit. We recommend using disk images sparingly. ![]() When you want to access the contents of that filesystem, you double-click on the disk image to mount the disk image as if it were an external drive attached to the machine. We recommend that you only use a disk image if you are backing up to a network volume connected to via ethernet, and we recommend using locally-attached storage for your primary backups.Ī disk image is a single file residing on your hard drive that contains the entire contents of another hard drive (except for the free space). To create a bootable backup, you must back up to a hard drive that is attached directly to your Mac. ![]()
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