Thread: Multiple maps on SD Card

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?

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.

Originally Posted by Santosan

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.........

@vasile72
Santosan's post you quoted was made almost 2 years ago, and was not applicable for your Nuvi 255W at the time which then would support only one map named gmapsupp.img in the Garmin folder of the sd.

Originally Posted by vasile72

On my Nuvi 255W the second map on SD card worked only with the name gmapsup1, not gmapsup2, so anyone interested could try this name also.
Thanks however for the tip on naming the map gmapsup with just one p at the end, because all other variants failed.

A recent fw upgade to your 255W has enabled a second map for sd, which must be named only gmapsup1.img as you have found.

Originally Posted by MSigol

One questin:
Coping the Img of bluecharts, to SD, is the same procedure that any IMG, or yu need to put in the SD ROOT or inside the directory?
By the way, later, Can I sync with mapsource? or need to install tha maps from cero?

Big question with small info!!! Device??? Format of BlueChart (old version for MapSourse or new IMG format)??? Please, be more specific in question! Garmin have so many different devices and maps...