I ended up wasting a lot of time trying to get my Garmin 60CSx working on a PC when it turned out I didn’t even need it now. So for one of you out there trying to get maps to work on Mac OS X, this might save you a lot of websearching.
How to get maps onto your Garmin GPS “x” series (microSD-enabled) GPS:
- Go to a place like MapCenter and download a map (.zip) and then uncompress it, you will get a file that looks like a disk image but isn’t—a IMG file.
- Connect your Garmin via USB to your Mac with a USB to mini-USB cable (one was provided with my model).
- Make sure you have the latest updates on your Garmin (this is the only step that requires a PC). An old Garmin might not have the new USB Mass Storage update. For instance, for my GPS, I go here and use a PC to install.
- On the Garmin menu, navigate to Setup -> Interface and then choose “USB Mass Storage”
- A volume “NO_NAME” will appear on your desktop. This is your MicroSD card so you might as well name it something useful.
- Create a folder “GARMIN” in that volume.
- Copy the map IMG file to the folder and rename it “gmappsupp.img.”
- Eject the volume.
You are now good to go.
I haven’t figured it out yet. Basically you would use a program that will pack all the .img files into a single one. If anyone knows something that will do this on the Mac, tell me.
I’m not planning on plunking money down on a Garmin MapSource map until it supports Mac OS X.
In the meantime I’ll just rename and move files on the card to make the maps available as I need it.