Replying to Noob Question for sure - Mac Harddrives

Alright I feel like I should be slapped for making this thread, but when I have a hard drive, how do I completely delete individual files? When I right click, the only options I get are move to trash, but that doesn't delete the data off the disk.. just the viewable folder.


Im hoping this is just some easy step that Ive missed, because I would really like to delete indiviual files with out having to reformat.

Also, easiest way to move all data from one external to another?