Diasonic Tech DMP-105 - Manual (Page 13)

Display at the Audio Mode
Upon power on at the initial purchasing state
ROOT It means the highest-level folder group of the audio mode at
the device. When there is no folder or file, or upon
formatting, there is no change even though the FF/REW
(search key) is moved.
F01, F02.... When a folder has been created at the audio mode,
user creates a folder directly at the PC through
connection with the creation USB.
< PC Connection Status>
F01, F02..... Folder is created sequentially in the order of
folder creation.
Within this folder, low-level folder can be created and file can
be put at the PC.
Search of the setting status by the above-mentioned conditions
(FF/REW) =
ROOT F01 F02 F03.....