I choose about 8 snapshots for deletion in snapshot manager. I pressed delete and it started to "remove unused files" .
Since it took some time I quite soon pressed "Cancel", the progress bar had filled about 1/3.
I thought that it would leave the snapshots that it had not deleted in the snapshot manager and that I could fix them later.
But now all snapshots were gone.
Does that leave me with 2/3 of unnecessary snapshot files on my hard drive?
How do I remove them in order to get some of may hd space back?