Check the listing for details. Korg PA 80 Factory Restore 5 Disk Set. Condition: New. Listed at 14.80 USD. These are the disks to restore the factory sounds to your PA-80. Follow these instructions to restore your PA-80. Go to the Pa80 Disk > Utilities 1 page and select “Restore Data”. 2. The “Restore from FD (Yes) or HD (No)?” message appears. Press ENTER/YES to select the floppy disk. 3. The “Are you sure?” message appears. Press ENTER/YES to continue (or EXIT/ NO to abort). 4. The “Insert backup disk #1 and press Enter” message appears. Insert the first backup disk, and press ENTER/YES. 5. Wait until the first backup disk has been loaded. A message will appear: “Insert backup disk #2 and press Enter”. Insert the second backup disk and press ENTER/YES. 6. Repeat the same procedure with backup disks #3, #4 and #5. When the backup disk #5 has been loaded, the backup data has been restored into the internal memory. Note: After the last disk has been loaded, the “Some files missing” message may appear. This may refer to some User data, so it is not a problem. Press EXIT to exit the message. 7. When the Wait message has disappeared, and the WRITE/DISK IN USE LED has turned off, turn the instrument off, then on again. Any files on this disk are being provided free of charge and are readily available for download on the internet. We are charging only for the disk and labor involved in preparing the disk for your use.