Thread: Multiple Maps on NUVI 200w/Nuvi 255W sd

There's apparently a bit of confusion on maling's part. Confusion that may steer you wrong. I have a 200W, so please listen.

The internal memory of a 200W can have at least three maps: gmapbmap.img, gmapprom.img, gmapsupp.img. Gmapbmap.img is the base map. Gmapprom.img is the preinstalled maps on a 200W, and gmapsupp.img is the name of the maps created by an upgrade. Based upon your post, you have a 1GB unit, which means you have approximately 950MB free space, since you pulled the original map from internal memory.

The SD card, regardless of size, has only ONE map that the 200W can recognize: gmapsupp.img. You can put multiple maps on the SD card, but the only one the 200W will see is gmapsupp.img.

So, based upon what you are trying to do, CNNANT 2012.20 will be on the SD card and your landowner map on the internal memory, assuming the landowner map is less than the total amount of free space on the 200W. The landowner map will be named either gmapprom.img or gmapsupp.img (your choice). Otherwise, you will have to try and combine the CNNANT 2012.20 maps with the landowner map into one gmapsupp.img to fit on the SD card.