Moving folders · How moving folders works
Can I move folders with Storage Studio if I don't have an external drive?
Short answer: Partly. Moves that leave a link behind need the fast drive, but Data Parking can still move folders to a connected cloud account or another folder you choose. Cache clearing and other free-up options don't need a drive at all.
Partly. Moving a folder with a link left behind needs the fast drive, but Data Parking can also move folders to a cloud account you've connected, or to another folder you choose — those are uploads or plain moves, without links.
Without any drive, the Fast drive destination is greyed out, and Move to fast drive buttons in What's Using Space can't run ("The drive is not connected, so there is nothing to move to."). Cache clearing and the other free-up options don't need a drive.
See Can I use Data Parking to move folders to a cloud account?