I have TOMTOM VIA 1415. The hard drive is is fully utilized with the map (100%) . While it has a memory card slot, it keeps blocking its use meaning that- if i load pois on it and insert into the unit, the unit states in order to use it you must format it using the device which of course deletes data. If i format first, then connect it to the pc to load poi's, it wont load poi's because it says the disk memory is full . Does anyone have a workaround for this? I miss my GPS Data POI's!