Moving folders · How moving folders works
Should I move folders with Data Parking or with What's Using Space?
Short answer: Start with What's Using Space: it finds your biggest folders and offers a safe one-click Move to fast drive. Use Data Parking to pick exactly what moves, move subfolders or single files, merge, or move to a cloud account or other folder.
Start with What's Using Space — it finds your biggest folders for you and offers a one-click Move to fast drive only where it's safe, with a link left behind and a one-click move back. Use Data Parking when you want to choose exactly what moves, move individual subfolders or files, move to a cloud account or another folder, or merge into an existing folder.
Both record every move so it can be undone, and both check the copy before removing the original.
See What is Data Parking? and freeing space.