I have a Zumo 550 so map storage is limited. The solution around this is to load the maps to a flash card and then put the flash card in the GPS. The problem is that using GE, I don't have an option to change my drive destination. It defaults to a drive that is the slot for the flash card. I suspect that there is still a setting in the registry that is preventing me from changing the drive. Also when I start Basecamp or Mapsource, I'm prompted to insert a disk in the drive that doesn't exist. I can click ok and the program goes back to where the original maps are stored.