Salute superpantoufle,

I would re initialize your drive with one of these:

http://macintoshgarden.org/apps/apple-hd-sc-setup-753-patch

http://macintoshgarden.org/apps/lido-756

Partitions for every single driver are added on HFS disks, there may have been messed up something. Which app did you use for partitioning?

To be on the safe side, low level format it with GPartEd or else to remove all old partitions and use one of the utils above to initialize.

Best wishes!