I can add to
@smfollen’s reply.
The SD card on the XT2 is scanned for various types of file automatically by different parts of the system. This includes:-
- Mp3 music files
- Maps
- Gpx files
Rather than requiring Gpx and mp3 files to be in a specific folder, it seems that it finds them anywhere - it appears to perform a full traverse of the folder tree in internal storage and on the SD card, including subfolders.
The mp3 and gpx folders are the traditional locations for music and gpx files respectively, but that seems not to be a requirement on the XT2. It seems that they can be saved anywhere.
When importing data from gpx files, the XT2 screen shows what type of data it has found (routes, tracks, waypoints ) and gives the full pathnames of the files that it has located. There is a limit to the number of characters that it can show, so it makes sense to keep file and folder names
Waypoints and tracks are imported automatically from files placed in internal storage when the XT2 is booted after data transfer. In the case of tracks, they are then removed from the gpx file, so they cannot be imported again. None of this happens with files placed on the SD card - routes, tracks and waypoints have to be imported manually, and the files remain unaltered.
(I have a sneaking suspicion that mp3 files are deleted from internal storage if the XT2 is asked to perform a full system reset. But I have only just noticed this and haven’t tested my suspicion).
There is an option to share data / routes using the SD card. I have never found this to be a reliable method on earlier Zumos, but have not tested it on the XT2.
Loaded maps are shown in the MyMaps sub menu (Settings -> Map Display -> MyMaps) . They can be selected or de-selected in that menu.