I have only ONE virtual USB drive in mediaplayer !dd if=/dev/zero of=/dtv/vusb bs=512 count=4
insmod /mtd_rwarea/dummy_hcd.ko
sleep 3
insmod /mtd_rwarea/g_file_storage.ko
sleep 5
IT'S WORKING !

One problem Remaining : The message popup at TV boot asking to browse the "new content" !
I will search Forum for that...
Vincent