Hya,
Code:
>pmount -t hfsplus /dev/sdb mp01
mount: Not a directory
>
This happened to my penguin. (Usually no error) It turned out to be that the external drive is corrupted. It looks like hardware failure. Anyway, the error message was not quite intuitive.
Take home message:
Whoever sees the message above, check drive failure!
Happy Penguins!