It should be a simple problem to fix. I was trying to download a portable program to an external USB drive (Seagate Free Agent). I tried to make a new folder on the fly and XP wouldn't allow it. I got stuck in some kind of loop trying unsuccessfully to name the folder and then cancel took me back to rename again. Finally I cancelled the download, but folders on the external harddrive were gone. The disk still shows 100+ GB used out of 250GB total. I see recommendations for Recuva and Testdisk as good for file recovery. But I didn't delete any files and nothing has been written to the disk yet. Are either of these programs best to restore the folder and file directories? Or maybe some other fix will do.
My computer is a Dell Dimension 8100 with an upgrade from Millenium to XP 10 years ago.