Regardless of the number of storage devices you have attached or built into your Mac, you will likely use Disk Utility for formatting them when necessary, to partition and resize them for various purposes, and otherwise managing them. However, one limitation you might find when using Disk Utility is that it will only act on one drive or volume at a time. Continue reading
Even though formatting advances like Journaling in Apple’s filesystem formats help prevent data corruption, problems can still happen that result in a drive not only being unreadable, but also unable to be reformatted.
If this happens, the drive may show up in the Finder sidebar but not show data when clicked, Continue reading