However, when it comes to formatting a drive connected to your Mac, the basics remain the same. All in all, it’s a useful visual, though different from the stacked column chart used in earlier versions of Disk Utility. Resizing volumes or adding new partitions with Disk Utility is straightforward, but you need to be aware of the limitations of both options. This guide looks at resizing an existing volume, as well as creating and deleting partitions, in many cases without losing existing data. The answer is any way you want, as long as you get it done. This guide shows how to use Disk Utility to perform the backup. Disk Utility has two features that make it a good candidate for backing up a startup disk. First, it can produce a bootable backup, so you can use it as a startup disk in an emergency. Second, it’s free. You already have it, because it’s included with OS X. JBOD allows you to create a large virtual disk drive by concatenating two or more smaller drives together. The individual hard drives that make up a JBOD RAID can be of different sizes and manufacturers. The total size of the JBOD RAID is the combined total of all the individual drives in the set.
