I've tryed this other managers:
but no results... Each one says that the disk is not wbfs formatted or is opened by another apps.
Yes, i can access to second partition, the NTFS one. No problem.
Yes, tried. On no one of 6 USB port the HDD works.
In the meantime, i've tried to follow instructions in post #4 of this discussion: http://gbatemp.net/index.php?showtopic=182970&mode=linear
It seems to be everything ok... all 51 byte (one for each game) are set to "01", but WBFS still not recognize the HD.
I think that the next step is delete all partitions and re-create new.... :-(((