usb vs main drive
I also use to install all my maps onto my 16gb SD drive. But after loosing the Montana's SD drive connection out on the trail more than once, I've since altered my map install approach. I now install CN map onto the main drive as my primary basemap, just in case the SD goes south. That way I have at least one good working map. All my other maps remain on the SD.
The ear plug in the battery compartment works the majority of the time to make everything snug, but when the going gets really rough the SD can still vib loose, hence temp loosing your map. Should mention I've only had this occur on gnarly rock infested single track type trails. When this occurs the fix is easy though, open bat compartment, re-snug the SD drive and ear plug snugger.
dvwalker screwed with this post 11-18-2012 at 08:27 AM
Reason: **SD drive correction