Sulu, mounting *every* N900's partition to Raspberry Pi (would it be possible to do it with normally running N900, i.e. same partition mounted by both Maemo and Raspberry Pi's Debian?), during runtime, or, even using backupmenu's read&write mass storage mode, seems to be another fine idea.

Ho ever, it would still require duplicating at least programs (LibreOffice, browser etc), because running them directly from N900's partitions (as installed for usage in ED chroot), would be far from "hassle-free", yes? Of course, this way we can also forget about any Maemo program (yet, as we can install Debian things on Raspberry Pi, it wouldn't be entirely ''tragic'' ).

As for sharing internet connection it's no problem via USB networking. Yet, it would require already running N900 (here we went back into my question about 2 OS mounting the same partition, simultaneously). Thus, we would be able to share both WiFi and Cellular connections, at the same time sharing partitions, without additional overhead (Raspberry Pi read things from N900's partition via USB, and at the same time, N900 share network via USB networking).

/Estel

// Edit

Wouldn't mass-storage mode and USB-networking exclude each other? If yes, we would need to stay on USB networking, and mount N900's partitions over network, while still having possibility to share internet connection. Also, isn't creating loop devices a solution to "2 OS mounting the same partition" possible problem? N900 would have partitions mounted normally, and Raspberry Pi via a loop.