Yamaha RY8 Owner's Manual page 79

MIDI DATA BULK DUMP OPERATIONS
You can "dump" User pattern, song and drum kit data in bulk to and from
another RY8 or an external MIDI data storage device (such as the Yamaha
MDF2 MIDI Data Filer).
BULK DUMP TRANSMIT - First, set up the storage device to receive a
bulk dump transmission (refer to the owner's manual of the storage
device for the proper procedure). Hold [MODE] and press [PAGE+] or
[PAGE-] to access the Bulk Dump function. The words "BULK SURE?" will
appear in the lower left area of the LCD. Press [ENTER] to initiate the bulk
dump transmission operation. When the operation is finished, the word
"END" will appear briefly on the LCD.
BULK DUMP RECEIVE - As long as the RY8 is in the Select function of
Song Play Mode or Pattern Play Mode, and the song or pattern is not
playing, it can automatically receive a bulk dump initiated from an
external storage device. (Refer to the owner's manual of the storage
device for the proper procedure for initiating a bulk dump transmit
operation.)
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