Korg Beat Boy Owner's Manual page 39

Be sure to only format using the Beat Boy.
If the Beat Boy is formatted using the
computer, it may not run properly.
Formatting while using USB power
1.
Turn off the power to the Beat Boy.
2.
Press and hold down the A-B/DELETE
button and the REC button while using
a USB cable to connect the Beat Boy to
a computer.
The Beat Boy enters format mode. The
following screen will appear on the display.
To cancel the formatting procedure, press
the button.
3.
Press the button to format.
While formatting, the following screen
will appear on the display, and the three
indicators of the tuning guide will blink
sequentially in red.
Blinking red
4.
When the formatting procedure is
complete, a screen instructing you to
disconnect the unit from the computer
will appear on the display.
) Page 37 "Disconnecting the Beat Boy from
the computer"
5.
Disconnect the Beat Boy from the
computer.
39