I backed up my mac today, however I had to delete the old backup from my external hard drive as I had no space for the new one. I was happy to do this. Anyway, my mac is now backed up and the external hard drive is now disconnected, but for ages when it tried to empty my trash the old backup I'd dragged from my external hard drive just wouldn't delete. It's been deleted now but when I check how much space my mac has 182.15 GB is taken up with backups and I don't know where they are and why they are on my laptop.. I'm trying to make space!