You might encounter an error message when trying to enable inactive drives from macOS High Sierra:


Drive unknown


If you encounter that error message, please check the file system you are currently using:


https://support.apple.com/de-de/HT208033


If you are currently using APFS:


Upgrade your Hornetdrive Client to version 4.5.3 or later and try again. To upgrade your client, download the latest client version from our download website and follow the installation instructions.




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