No need to additionally check for swap, as there are no partitions found and no device found. The corrosion nokia care found seems to be very real The emmc is non-existing for the kernel
Try to get something out of Nokia care, be it a new phone, a repair or some other stuff

But:
If nothing works, here http://talk.maemo.org/showthread.php?t=69081 is a thread about moving /home /opt, aka. /home/opt, and /home/user/MyDocs to an external card. Try to read through it and do not hesitate to ask for more information if needed.
Get the fastest card you can grab, because speed-wise external cards are inferior to the internal card.