As a newbie to this, through the site I have managed to take off the UK only map and replace it with France. Did it all using a mac too. Much more reliable. The hard drive is not big enough to take all europe.
The Nuvi 1210 does have a microSD slot. I inserted a 2gb card and copied the 1.8gb west europe map on, but do not know how to tell the Nuvi1210 to read it. I put it in a \Garmin folder as instructed.
Can anyone help?
By the way, I did all this using a mac. Much easier and faster.
You have to select the new map in Tools\Settings\Maps.
As dasilvarsa wrote, if you use the Map folder in SD and can use more than 1 map on SD card and can rename maps as you wish.
SD:\Map\XXXX.IMG (the map)