Greetings! My intention is to keep a synced copy of all files on a HD, and use an SSD with selected synced files. This way I have a local copy, but can keep my main drive as empty as possible.
The only way I can think of to do this is to have another MacOS installation (perhaps virtual), and sync the HD with that. Is there another way? I would be happy with launching a script every now and then to sync the HD-copy.