The Nokia OS installs in a 256MB Area of Flash memory. KDE tarball compressed is 322MB round about, and uncompressed 975MB or more. So you can see this will not fit in flash memory with the Nokia OS. So KDE is available to be installed two ways Option #1 Create a minimum 1.5GB ext2 partition on SD card and copy OS from flash onto ext2 partition. Then un-tar kde on top of that. Option #2 copy all the debs and tarball to SD card can install. The DEB install creates a 1.2GB partition in a file on your SD card. It will format the file as an ext2 partition and mount it as /usr/local Then the debs will untar the files and setup KDE. Does this clear up your confusion?