Yes, I have backed up my MS300/750 several times. Mine started out as a MS300 and then I upgraded the hard drive to a 750, swapped out the fan, and added sound deadening material (dynamat) to the chassis. I use the unit almost every day and am very happy with it. The "golden disk" does exist and can be found if certain people are sent IMs. I think we are supposed to be discreet about this and that is why I am being slightly coy. I have posted a lot about this upgrade and if you search "ms300 upgrade" you can find out a lot on the topic.
