Since I cannot figure out what hardware uberfreak has posted in the hardware compo thread, I made this screenshot guide to you, how to do it in Workbench.
First, WB standard mode for a folder with no icons. Example is Locale disk.
Then right click the mouse button and select "Window > Show > All files"
The result is that files which doesn't have any icons will become visible in Workbench.
Then with the window active which represents the disk or drawer of which content you want to copy, select "Window > Select Contents".
The result is that all icons in that window is toggled to the selected mode, now enters the drag and drop action. Holding down a shift key and left amiga mouse key, drag the icon collection over the volume or drawer where you want the files. Release the mose, and the files will be copied. Here's a shot of what it'll look like.
A WORD OF WARNING
If you do this withing the same device or volume, files will be
moved - not copied!!.
Perhaps there is a modifier key that'll copy files instead of moving the files when doing it within the same volume, but I cannot at this moment recall it.