There could be plenty of reasons to format the APFS drive. To help you do the same, we have drafted this informative post. Nevertheless, there are times when users have to format the APFS drive. If you are working with APFS on your macOS Sierra, then you must already be aware of these features. Since the new file system comes with lots of advanced features, it provides a better experience to its users. With the introduction of the new Apple File System (APFS), Mac users are gradually upgrading their systems.