Disklavier

I imagine this has already been asked and answered, but 30 minutes of searching the archives just confused me.  So, I have just upgraded my Mark III to DKC-850.  Is there any easy way to get my many Floppy disks from Yamaha onto this new system?  Is a usb floppy drive the only way.  But as I recall, you cant read a yamaha disk  anyway.  The DKC-850 manual does not even recognize that this might be desired?!!!!

So, can someone please re-reply with suggestions, as this is probably a question lots of people will have in the next few weeks, as the DKC-850 boxes are installed in the USA>

Thanks again for your help..... Dave