Backups & restore points · Status and problems
What happens if my backup drive isn't connected?
Short answer: The set waits and tells you it couldn't reach the destination. Reconnect the drive or network and it backs up on its own, catching up on what changed; Back up now starts it immediately.
The backup waits — nothing breaks. If a backup can't reach its destination, the card says "Couldn't reach the backup destination (…). Connect the drive or check your network.", or that it's waiting until the destination is ready and will back up quietly in the background.
Plug the drive back in (or reconnect to the network for a cloud account) and the set backs up on its own, catching up on everything that changed while it was away. Press Back up now if you'd rather not wait.