Use the following procedure to format a USB memory stick for use with the RD-800:
1. Press MENU.
2. Cursor to “Utility,” and press ENTER.
3.Cursor to “Format” and press ENTER.
4. Use the DEC / INC buttons or the value dial to select "USB MEMORY" and press ENTER.
5. Press ENTER again to confirm the operation.
• Never turn off the unit while the screen indicates “Executing...”
• Don’t disconnect the USB flash drive until formatting is completed.