Disklavier

I have just purchased a used DC3 with a Mark II Disklavier system.  
I was trying to read the files on a disklavier floppy on my PC 
computer.  I am told the disk is not formated (not true).  I am 
questioning if the Disklavier Mark II uses Mac file format? Is there 
a way to read PC formated disks on the Disklavier?

Ken