Troubleshooting & messages · Undo, move back and Recycle Vault
What does "The copy on your drive isn't reachable right now" mean?
Short answer: The item lives on your external drive, which isn't connected, so nothing changed. Connect the drive and try again — an interrupted put-back resumes safely.
You asked Storage Studio to put something back, but its copy lives on your external drive and the drive isn't connected (or stopped responding). Nothing was changed — the item is still safe on the drive.
Connect the drive and try again. If a put-back was interrupted part-way, running it again picks up safely; the item stays on the drive until it's fully back.