ok first off Deltree is an old command that hasn't been around since win95. ***EDIT***

Actually I think it may have been in win98 also, but I never really used that OS much so I don't remember.

/EDIT


The advantages of running a deltree /y c:\*.* would be that it would delete every file, folder and subfolder and never ask if it was ok to do so. Running del c:\*.* will still prompt you for user interaction when attempting to delete folders/subfolders.

Anyway, there was a macro virus many years ago, I think it was called MDMA, that did the deltree /y trick. I vaugely remember it being able to work on macs to do the same thing. MDMA came out shortly after the Melissa virus hit.


On the format c: /u command, the Unconditional switch means to format even if the block is considered bad. I used to use it in conjunction with the /s and /q commands when making bootable floppies. I always got a kick out of the command line being format c: /s/u/q hehe, yes it was juvenile