Friend's iMac finder not responding because of failed massive drag and drop?

[Onamuji]

Jerry® wrote: Now, do I need to trash the old Desktop folder??

Dunno what's in that folder that might be of value. Probably were some items on the Desktop before the fatal drag-drop. Can scroll through it in list view to see.

If there's nothing of any importance in it then, sure. Go ahead and trash the OldDesktop folder.