Shonky maps...... saving maps problem

Hi , i am new to this as well but from what i understand is that any new info overwrites the old info as you say . So i guess buy a bigger card and put all the maps to it at the one time .

Hi Michael,
thats correct, Garmin overwrite anything loaded earlier. The trick is to load the maps you want onto the card. Turn your gps on and go to your menu system, maps. Then highligt the map you want and either select or de-select it as required. If two differnt map sets are loaded onto the one card eg. shonky map plus Oztopo, the two different maps will overlay one another. So if there are any differences in the maps you may see 2 roads running paralell to each other when there should only be one. Hope this helps.

Hi - you can also have several compiled map files loaded if you use differnet filenames

e.g. Standard file created by Mapsource is gmapsupp.img. You can also have one called gmapprom.img (standard on Nuvis with city nav preloaded I believe) and one called gmapprom1.img. You can also have two gmapsupp.img files - one on internal memory and one on the SD card (if you have one). I think the gmapprom.img files only work from internal memory but not sure. There are a series of file names for basemaps and 3d maps but again not sure if these can be used for mapsource created maps.

Cheers
Greg

Hi. What we have found is, if you want to load multiple maps onto a card to put into the GPS this is the way, open Mapsource and select " Map tool" and then select one of the maps you want to load from you list , the draw over the map covering all of it you want ( changes to pink), then select the next map you want and do the same , untill you have them all done .
We did Shonky Maps All versions , Oz topo, Tracks Aust 4.
Then plug in your unit and select " to device" after it has found it tick "Maps" and the send, it will load them all as one file . then on the unit , open "Map Info" and select the one you want to use , if you tick them all City Navigator will over ride them.
As far as I know that is a factory setting which you can't over ride, ( please correct me if I am wrong ).
If you want to add another map to the card , you have to go and load them all at once or the last one will over ride the others.
This works on a Streetpilot 2610, Nuvi 255W, Nuvi 760 and a Streetpilot C510.
Cheers Des.