Questions for Edge 840 Newbie

Hello,

1. I migrated my profiles from the Edge 830. The "Distance to Destination" data field always showed me the remaining distance to the end of the loaded route. Now it always shows 0 km. Where

is this? Like on the Edge 830, I've disabled track recalculation. I just display the track on the map.

2. The Edge 840 now has 32 GB instead of 16 GB, but the storage is extremely full. I only have an OSM Germany map installed, and it just barely fit. How can I save storage on the Edge 840?

In the map manager, I find a locked US map that I can't delete. I actually only need the Garmin maps of Europe.

Perhaps it's possible to delete unnecessary databases? I mean, I don't need a map with hazards either. Is there any way to manually delete them from the USB drive? And if so, what are the file names?

Thanks!