Probably a real simple answer but I'm a bit of a tech idiot do bare with me!
I've got a Garmin 810 with the European navigator SD card, I've also just purchased a 1:50k land ranger card. These are both 4gb. Could I buy a blank 8gb card and combine the two to save remembering to swap the cards/loosing one of them?
Will the garmin find the right maps automatically if I do this, ie. when in France will it switch to the euro map set?