Although I know how to delete a file from my hard drive, I have bee looking at how to permanently delete files to make sure that they are non-recoverable. This is because I have some files from work that I need to get rid of totally and completely.I will have to do a search on the internet, as it is important that I do it correctly. My boss has said that he will check after I have finished. It would have been nice for him to tell me how to do it, but that is not how he works.