Hello, I need to know how to retrieve the data from a Disk image stored on my Apollo Cloud. The drive it was backing up has failed and I need to get the data back. When I try to mount the disk image after holding Command-R upon startup of my Mac and select that disk image, my mac says there is no system files on the disc image and it won't mount. So if this isn't the proper procedure, how do I open that disc image?".