|elpolloloco wrote: |
|Hi! I have a Nuvi250 and I just bought a SD card to put Mexico maps on it. My computer reads the SD card alright but the Nuvi doesn't! I also have a Nuvi350 and it can read it's SD card just fine. Any ideas? I tried to download the Mexico maps (1.25 gig) on the Nuvi internal memory but it says it is too big...hence the SD card! Can I create more space on the Nuvi, paste the Mexico maps and foget about the SD card? Thanks for your help! |
It's the partitioning of the SD Card!!!
I struggled for days with my Garmin and different SD cards from all brands, qualities, speeds, specs.
Finally I found out that SD cards must be very strictly partitioned: you must have only 1 PRIMARY PARTITION on the card. Several tools on windows like Windows' disk management tool and MiniTool's Partition Editor create nested partitions... phones and gps devices can't open those.
How I found this out is when I got home and tried to manipulate some map images. Linux saved my day and now I can navigate american maps with a european Nuvi.
So the tip here is: try to see if your SD card has been partitioned to have EXTENDED partitions or LOGICAL partitions. IF that's the case you need to delete them, create a primary partition, format it to FAT32, and re-copy your maps.