SD card vs Internal memory

The 250W isn't supposed to have 3D buildings and junction views and thus those files are doing nothing on your 250W but wasting space. In any case, a 250W SD card only supports a map named "gmapsupp.img". Copy some of your main map onto the SD card using MapInstall.

GMAPBMPA.img is the basemap file and shouldn't be moved.

Thank You Strephon_Alkhalikoi

You can indeed move the *.img files from the unit's internal memeory to the SD card. Your original files may have been named either gmapsupp.img OR gmapprom.img . Make sure that you move them into a root directory named \Garmin on the SD card

Newer units can do that, such as my 1300LM. The 250W and its smaller brother the 200W, which I own, do not support a directory labeled "Map". If they did, I think I would have known about it.

The maps MUST be named in a specific fashion, which DorkusNimrod on these forums has posted more than once. They MUST be located on the root of the drive in question. The SD card slot only supports one map and that map MUST be named "gmapsupp.img".

Do some research on the 200W and 250W before passing along information.

No one mentioned a directory labeled "map". And for a map to be stored on an SD card, it must go into a \Garmin root directory there

Elig99 said:
No one mentioned a directory labeled "map". And for a map to be stored on an SD card, it must go into a \Garmin root directory there

I'm sorry. I thought you were referring to newer units which is why I mentioned a map folder within the Garmin directory. You are correct in the placement of the map on both internal and external memory locations, and this is because I didn't check it for myself. Here is a screenshot to show you are right. It's rare that I get things wrong like this, but this time, I got it wrong.

I'm sorry.

Screenshot (Click Me)