TrekBuddy

[plord]

Hi All,

I have a Nokia E70 with a 64M mini-SD card. I have around 20M of png maps to use.

When I transfer the files to the phone, I end up with only 5M free ie I can only use around half of the disk space available.

I think this is because the, rather primitive, FAT filesystem doesn't cope well with many small files.

I see that the E70 formats the card with the following settings :-

* 512 bytes per logical sector
* 16384 bytes per cluster
* 1 reserved sector
* 2 FATs, 12 bit entries
* 6144 bytes per FAT (= 12 sectors)

Now if I put the card into my pc and format it using the Linux command mkdosfs, I get :-

* 512 bytes per logical sector
* 2048 bytes per cluster
* 1 reserved sector
* 2 FATs, 16 bit entries
* 60416 bytes per FAT (= 118 sectors)

After re-copying the maps I end up with over 37M free rather that 5M free ..... these new settings appear to be much less wasteful.