Thread: Which is the limitation to the SD/microSD card size for Garmin devices ?

Originally Posted by Yellow Duck

....as per Garmin web site the Nuvi Line of GPS has no limit of map segments, the only limit is 4gb for each IMG file.

Yes, and Garmin say no limit on the size of the card (in theory?). The 4 GB minus 1 byte limit for individual files in FAT32 is a consequence of the file length entry limitation in the directory table and nothing to do with individual *.img file limitation in the Nuvi line. FAT32 has now been in mainstream use since the mid 90's, whereas we went from FAT8 to FAT32 in less than 20 years. File Allocation Table as a file system is deeply embedded now, and sure speeds have got much faster but has it reached some limits? I dunno, too big a picture for me. Enough of my layman's musings:
My Nuvi 1300 happily runs a RiDATA 16 GB Class 10 and i've heard of 32 GB being used with no problems. 64 GB micro SD is real now so who's gonna step up and fork out a couple of hundred bucks to try one and report?