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NOTE: If you don't see a home folder with your name, click the Finder -> Preferences, click the Side Bar tab and check-mark your home folder for display.
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Create the ' Garmin' folder ifĬlick your Home folder (i.e., Doug) to locate the Disc Image File in GPS Trailmasters\Garmin\Maps (i.e., GPS Trailmasters Snowmobile Grand Touring.img). When using an SD card the Disc Image File must be copied to the ' Garmin' folder and renamed to "gmapsupp.img".
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You can also copy to an SD card in your computer or Garmin GPS. If it's still not listed, some very old GPS units, like the Nuvi 500 do not support custom map names so you must rename the file to "gmapsupp.img" in the ' Garmin' folder. If the map is not listed on your GPS in the Map Information settings, then you don't have the correct folder, move the Disc Image File to the other folder. The ' Map' folder should be created at the same level as the ' Garmin' folder (see image below). You may need to create the ' Map' folder when installing the map for the first time.
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1) Connect the GPS to your computer with a USB cable.
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