ioan,

There's a line in /etc/fstab:

The "vfat" here indicates the first partition on the MMC card is FAT-formatted. Changing this to "ext2" or "ext3" should then work (will need to be root).

Obviously Windows will no longer natively read the MMC. What are the directory limits for FAT32?

HTH,

Andrew

if 770 is able to read fat32 will be great! fat32 has the cluster size 4KB (4 times smaller than fat16). In fat32 1000 files with size 1kb will fill 4000 kb (3.9Mb), in fat16, same 1000 files will fill 16000 kb (15.6Mb) so it is a BIG difference!

-i

Well, when I repartitioned my MMC card, the first partition was formatted FAT32 - seems to work ok :)

Given the 770's using the standard vfat code from the Linux kernel mainline I can't see any reason it shouldn't, either.

yes, fat32 works fine, so my advice to anyone who wants to store the maemo-mapper's maps to the memory card is to format the partition they use for maps in fat32 (don't forget to backup your files first), this way they will save a lot of space.
thanks Andrew

-ioan

Since the maps used by Maemo Mapper average maybe 4k per file, and since the variance of the file sizes is so high, there are actually many many files that are much smaller than 4k, so I personally store my maps on a partition that I have specifically formated with ext2 to use 1k blocks.

That would be my personal recommendation, although I don't expect the average user to have the know-how or the patience to expend the effort necessary to set up this type of a partition (and mount it whenever running Maemo Mapper).

I agree, though, that FAT32 is definitely better than FAT16 for Maemo Mapper.

fat32 with 512 bytes sector size
 

WARNING everything you have on the mmc will be lost. Make sure you backup everything.

If you use maemo-mapper and the map tiles fill up your memory card, you should format your memory card with this command from windows command promp:

format e: /FS:FAT32 /A:512 /V:MMC

e: is the drive letter where windows mounts your card.

-ioan