OK, I used "Storage Partition" app to discover the real partition structure of my device, and all seems clearer now.

Internal Storage 7.10GB
mmcblK0
- mmcblk0p1 - 512 KB - P1|xx|Not Mounted
- mmcblk0p2 - 6.0 MB - p2|xx|Not Mounted
- mmcblk0p3 - 10 MB - p3|xx|Not Mounted
- mmcblk0p4 - 8.0 MB - p4|xx|Not Mounted
- mmcblk0p5 - 201 MB/2106MB - p5|ext4| /system
- mmcblk0p6 - 647 MB/831 MB - p6|ext4| /data *****************
- mmcblk0p7 - 174 MB/300 MB - p7|vfat| /cache
- mmcblk0p8 - 8.0 MB - p8 |xx| Not Mounted
- mmcblk0p9 - 1.24 GB/5.74 GB - p9 |vfat| /mnt/storage/extsd1
- mmcblk0boot1 - 4.0MB - xx|xx|Not Mounted
- mmcblk0boot0 - 4.0MB - xx|xx|Not Mounted

External Storage 0 - 29.71GB
mmcblk1
- mmcblk1p1 - 1.71 GB / 29.71 GB - p1|vfat| /mnt/sdcard



So, there's is in fact a 1GB storage space which is being used for apps. Apps end up there, and not in my external storage.

What should I do to expand/extend mmcblk0p6? Is the only way partitioning my 32GB storage and creating an ext4 partition in it, and use link2SD?

I also noticed that it is not actually true that some apps used the external sd card. What happened, as far as I understood, is that TomTom and Sygic installed in the 1GB mmcblk0p6, but their maps ended up in the 32GB mmcblk1p1. Is this behaviour built into the nav apps, under the assumption that a navigation unit will come with a larger storage area for maps?


Thank you!