Troubleshooting & messages · Drive connection and drive messages
What does "There isn't enough free space to complete this safely, so nothing was changed" mean?
Short answer: There isn't enough working room to finish safely, so Storage Studio didn't start. Free space on the side that's short — often your Mac when moving something back — and retry.
The operation needs working room — on your Mac, your drive, or both — and there isn't enough to finish it without risk. Rather than start and get stuck halfway, Storage Studio changed nothing.
This often appears when moving something back to a nearly full Mac. Free some space on the side that's short (empty the Trash, clear caches with Free Up Space), then try again.