OK, I've just spent 30 Minutes searching for an answer to this one and I cannot find a definitive solution, so if anyone can help that would be great.

I live in the UK but make frequent trips to Eastern USA for work.

I've done the Diablo and Maps 2008.1 update on my N810. The map for UK/Ireland is in my Internal Memory, and because I wanted to save space, I did a PC download of Eastern-USA map and put it in the /map directory on my External 8GB memory card.

Now when I start Map I get a message saying something like 'Multiple Mapdata. Maps found in Internal and External memory. Using Internal memory card'.

When I try to do File/Maps to try to select the East-USA on the External card, it only shows 'Maps in Device' as UK-Ireland. Under the Available Maps tab all the maps I can download are shown but I don't want to re-download the Eastern -USA one, I already have it on the External Card!

Question is then; How do I tell Map App to use the the External Card stored Eastern-USA map?

Sorry for long post, but I'm trying to be accurate in explaining the issue. Any help appreciated. Ta.

The simplest way is probably to temporarily rename the /media/mmc2/map folder to something else before you start Map. I think that ought stop it finding the internal maps. So start xterm, "cd /media/mmc2" then "mv map map2".

Or create a symblic link to the map data on the external card, to the internal card map folder.

I think it's not possible becouse the file system on external and internal cards is FAT32. Symbols link maked only on unix file systems: ext2 or ext3

You are correct. Fat32 is limited...

As for the OP's problem, I would probably move ALL maps to the external MMC. That way you can either use a large (4-8GB) MMC with all the maps or keep the U.S. map on it's own MMC and switch it out when needed...

cheers,
kernelpanic