Ok, with the RX02 running I see that 50 of these disks from Solarex were formatted with the FD: driver which is probably the MXV21 controller. Since I don't have a 5.4 version of this driver and to be honest will not be putting the MXV11 controller online anytime soon I'm offering these disks for free. So if you need 50 disks with various versions of RT11 and god knows what data on them or 50 frisbees let me know and they're yours for the cost of shipping. I need to either pitch these things or give them away. Thanks! Chris