Here is what happened; I tried the delete and empty trash method, and worked at first try. Three days ago, I did the same thing because the previous backups are not needed anymore. I used the same method, but didn't work. The screenshot shows you a trash and error code. I MRoogled it, Googled it, and when I went to the Genius Bar, they just told me to reformat the whole drive. I have all the downloads and all the projects which I can't delete. Those are as big as 200GB (My External HDD is 500GB, not portable), and they are as important as my college applications. Don't question me on these, it's just annoying. No porn. So, what's the solution? I used all command I knew, and it didn't work. Help?