Can someone please advise how do I add OS maps to my Garmin edge 1000. I use the Garmin Edge predominately for cycling but also would like to use it for navigation when running and walking in the UK countryside. I would like to add OS maps and I understand it has to be purchased from ordinance survey. Is that correct. I use a chromebook laptop and not sure if OS maps will download only to windows and mac's. Do I need a separate sd card or can I use the existing one and switch between maps depending on the activity.
I'm not that good with tech so please bear with me!!!
Thanks in advance.