Moving folders · How moving folders works
Which folders are worth moving to an external drive?
Short answer: Big folders of your own that you keep but don't need on the built-in drive every minute: finished projects, video exports, old installers and large parts of Downloads or Documents. What's Using Space puts a Move to fast drive button on the safe ones.
Large folders of your own that you keep but don't need on your built-in drive all the time: finished projects, video and photo exports, audio and music libraries you've finished with, old installers, and big parts of Downloads, Desktop or Documents.
The quickest way to find them is What's Using Space: it measures your biggest folders and puts a Move to fast drive button beside the ones Storage Studio can move safely. For anything else, use Data Parking to pick folders yourself.
Apps' own data — including developer tools' data — is handled differently: Storage Studio only moves the part an app rebuilds by itself, never the settings and sign-ins around it.