Thread: Multiple maps on SD Card

Originally Posted by klauzja

So guess calling the second map image gmapsupp2.img will not work? I read somewhere else that this works on some Garmin models.
Also, what would one do if the combined IMG file is bigger than 2GB?

One more question, how would you find the SD Card number/ID on a Zumo 550?

Assuming you are refering to a Garmin device, you can use the internal memory to copy two maps, one named gmapprom & the other gmapsupp. You can use your SD to copy two more files one named gmapsupp & the other gmapsup2 not gmapsupp2 Garmin won't recognize it. If you want more info about mapset naming you can find an interesting mapset naming guide here: (link removed)

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Your second question about Zumo 550, i don't know why do you need CardID but if you are in the process of creating unl file for your map/s, you probably need the UnitID code.