i've tried with a 2gb usb stick formated FAT

i didn't made the hole process but it is able to make fdisk comands.

I have formated FAT the HDD, and made a partition of 2 GB and the ret of 900 GB unpartitioned, but i had the old problem...

Could be a problem with the hdd?

If i connect the hdd in the router just for file sharing...it can't be seen...i have enabled samba and FTP, NFS is Not enabled...

Do you have any ideea?