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GPS City Q&A » Topographic Mapping » How to load multiple maps (Canada with US) onto Garmin Oregon 450?

Topographic Mapping (5 replies)

Item

Original Question

How to load multiple maps (Canada with US) onto Garmin Oregon 450?

› Garmin Topographic Canada DVD with Basecamp

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Deb
London, ON

Original question asked on Nov 28, 2011, 9:16pm

I travel between Michigan and Ontario regularly. I have a Garmin Oregon 450 and Topo Canada v.4 with BaseCamp AND Topo US 24K Northeast. In BaseCamp I can only view one set at a time but it's easy enough to switch views with the drop down menu. My problem is that I can't seem to load them both onto the GPS at the same time. Example: If I load maps for Michigan, the Ontario maps disappear completely. There is no enable or disable option (via setting) for both as one should expect. One map set completely deletes the other or so it appears. I was hoping to use this cross border. As it is...I can't. I have to reload from a computer to switch. Is there a solution?

Jordan
GPS City

Reply #1 on Nov 29, 2011, 8:25am

When loading the map you need to load both at the same time.

1. In Mapinstall select the Canadian maps, highlight the areas you want
2. Then use the drop down menu and select the US maps, select the areas you want
3. Then send the maps to your GPS device.

Each time you send a map it overwrites the last one.

Deb
London, ON

Reply #2 on Dec 4, 2011, 8:36am

Jordan: That was what I had been doing...and it does not work, as far as allowing me to load and use Both map sets at the same time. I did find the solution however. It's the same procedure in BaseCamp as it is in Mapsource. This DOES work!!

From the Mapsource FAQ:

M17.) How do I use multiple map (.img) files to help me better manage maps on my Garmin Oregon?

Even though Mapsource and MapInstall always save maps sets as [drive]:\Garmin\gmapsupp.img this file can be renamed once it is on the Oregon to any name (as of beta software 2.99) as long as the .img extension is preserved. This is very helpful if you want to manage multiple maps sets, say one for your home area that would change infrequently and one for a travel destination(s) that you might change frequently. The steps for doing this are:
1. Follow the procedure in M15 to create and download your home map set
2. Using a file explorer on your computer locate [drive]:\Garmin\gmapsupp.img and rename the file to [drive]:\Garmin\myhomemaps.img
3. Follow the procedure in M15 to create and download your travel map set

When you are done with your travel map set this file can be deleted and replaced with a new map set for your next destination without having t

Deb
London, ON

Reply #3 on Dec 4, 2011, 8:37am

Continued:
When you are done with your travel map set this file can be deleted and replaced with a new map set for your next destination without having to rebuild and transfer your home map set.

This technique can also be used to fully use microSD cards larger than 4GB. Perform steps 1 to 3 to create multiple img files on your microSD card. This allows you to have multiple img-map-files of up to 4GB each. All maps will be detected by the Oregon. You can select the maps you want to use in your Oregon profile like usual.
M15.) How do I use Mapsource to load additional maps onto my Garmin Oregon?

The best place to start is the Mapsource manual in the section called Loading Maps to Your Garmin GPS Unit. The basic operations required to send maps to the Oregon are:
1. Connect the Oregon to your computer
2. Select a number of map regions in Mapsource (OR BaseCamp)
called a map set that you want on your Oregon
3. Use Mapsource to build the map set and transfer it to your Oregon or the Oregon's SD card

Mapsource (OR BaseCamp) transfers the map set to the Oregon as single file called gmapsupp.img which is stored in [OR drive]:\Garmin or [OR SD drive]:\Garmin . Every time you repeat the process above you delete the previous m

Deb
London, ON

Reply #4 on Dec 4, 2011, 8:38am

Continued:
Mapsource (OR BaseCamp) transfers the map set to the Oregon as single file called gmapsupp.img which is stored in [OR drive]:\Garmin or [OR SD drive]:\Garmin . Every time you repeat the process above you delete the previous map set and replace it with a new map set. Maps cannot be added or removed incrementally using Mapsource. (OR BaseCamp)

Jordan
GPS City

Reply #5 on Dec 5, 2011, 7:37am

You do not need to rename files in order to make it work. There may be another issue you are having. But what you mentioned should work but it is not recommended

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