"READ ONLY" is displayed.
This indicates that writing is not possible on the currently connected USB device (that it is for reading only). (USB devices in the HFS+ journaled format or USB devices that are write-protected.) In this case, the behavior is following:
*Writing of HISTORY information as well as the Master Rec and Beat Sync functions do not work.
*Category browsing is no longer possible and only display in the folder browsing mode is possible.
