I created several folders because the max number of items (files) per folder is 249.
Styles folders organized by 'type' eg. Latin, country, bigband, rock'n roll, ballad, dance, disco.
One folder for registrations (works great!)
An extra folder that contains a copy of the User(flash)disk..... just in case.
The MIDI-folder contains many subfolders ordered by artist/make.
After the Tyros got organized I took a full copy to PC and burned a DVD (backup)
Transfer thru the USB link takes a while, but it is worth it!!
Roel