Choosing the Right Format Mac OS Extended (Journaled) To start, here’s a brief explanation on the different disk formats that you can choose from when formatting an external drive on your Mac and the different pros and cons of each. In this post, we’ll try to clarify this situation and then we’ll show you how to erase/format any external drive on your Mac. In many cases, we learn that the native format of external drives that work seamlessly with our Macs simply won’t work (or will just work in some limited form) with Windows PCs and other devices (like your PS3 for example). For Mac owners, one of the most annoying/inconvenient aspects of owning a Mac is the external drive compatibility.
