APFS does not natively work with Windows.APFS is not compatible with Time Machine on macOS versions High Sierra to Catalina. Time Machine requires the drive to be formatted Mac OS Extended (Journaled) for these versions.APFS is only available when Scheme is set to ‘GUID Partition Map’, APFS will not be shown when Scheme is set to Master Boot Record – See Step 6.APFS is not officially supported for macOS versions prior to 10.13 (High Sierra), and will not mount on 10.12 and earlier.It is important to keep the following in mind when formatting to APFS: Not seeing your version of macOS? Click here to see other versions of macOS and different formatting options.Not sure which version you are using? Click here to determine your version of macOS.IMPORTANT: This article applies to the following macOS versions: