In situations where a Garmin device does not have sufficient internal memory to load full coverage of a City Navigator NT map update, Garmin Express allows the maps to be installed to a removable SD / MicroSD card. Most devices support this feature, but there are some exceptions:
These devices do not support this feature. Garmin Express will automatically offer to install a smaller coverage region to these devices when there is not enough internal memory to install full coverage. Coverage regions may be changed as often as desired. To install a different coverage area, see How do I reinstall maps or change coverage using Garmin Express?
If full coverage is needed on one of these devices, a workaround exists to install the maps to an SD / MicroSD card.
To install a map update to a memory card using this workaround, the map update must first be installed to the computer.
If the update has not been installed to the device yet:
If the update has already been installed to the device previously:
After the installation is complete, maps can be installed to the memory card using Garmin MapInstall. To do this, follow the instructions in the article How do I install maps to my device with MapInstall?
Once the desired maps are installed to the memory card, they will function the same as maps installed to the internal memory.