Hi there, Apple File System (APFS) supports macOS 10.13 or later, and Mac OS Extended (Journaled) or HFS+ supports macOS 10.12 or earlier. If you want to use the WD hard drive on macOS Lion 10.7.5, you have to format it to Mac OS Extended (Journaled). Just go to Disk Utility > select the hard drive (not a single volume) > click Format in the main window > give your hard drive a name > select Mac OS Extended as its file system > wait for the format to end. Then you can use the WD hard drive on macOS Lion 10.7.5 successfully!
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