sittinduck - I reckon you'd be better off sorting the freezing issue rather than saving the DROs. When you restore them it may not do what you might think it will. For example - you don't say whether you're using the parallel port but if you are you get all sorts of random signals from it when you boot so that would cause your axes to move. You could of course turn off your drivers but that causes other issues especially if you're microstepping.

Ian

I use the PC parallel port.  Is there a breakout board for this?  Maybe it will fix the Mach3 freeze issue.