Hidden, System and Read-Only files... nobody mentioned these file attributes. If you do the standard "del *.*", files with those attributes will NOT get deleted. The Deltree program doesn't care about those and will zap everything, regardless. Deltree does normally prompt you to be sure you want to do the delete. If you add "/y " to the command line, it won't ask first, ZAP! It can get very confusing because a normal "dir" won't display hidden files. So you think the directory is empty and it isn't. Depending on your version of DOS, you can do a "dir /a " and it will show all the files, hidden, system, read-only, all of them. Whew, I'll skip the "attrib" command for now.