Creating a large partition and booting off it
I found it is possible to add a partition to the internal flash card. WARNING: Using this recipe you will loose MyDocs.
umount /home/user/MyDocs
/home cannot be umounted, unfortunately. But this didn't do any harm to /home
Use parted to shrink the MyDocs partition (on my N900 it was the 1st one)
reboot
Use fdisk to
- remove the first partition (Because parted makes it not end on a cylinder boundary)
- recreate the exactly same partition again (this time ending on a cylinder boundary)
- add the 4th partition right after the 1st one
reboot
Enjoy the new partition.