Yamaha MDF3 Owner's Manual page 17

5. Press the START/STOP key.
The LED above the key will light steadily,
and the LCD will display a message tell-
ing you what percentage of the disk has
been formatted.
Formatting~~~93%
It should take approximately 70 seconds
to format a single floppy disk. When the
disk has been completely formatted, the
START/STOP LED will begin to flash
again, and the "Format disk" message
will reappear.
6. Format another disk.
If you wish to format another disk at this
point, eject the disk and insert a new one.
Then press the START/STOP key to be-
gin formatting once more.
7. Exit the function.
When you're done formatting disks, press
any mode key (MDR, SEQ, JOB, or UTIL)
to exit the "Format" function.
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