My son placed a 16gb flash in the usb port of the 360 and formatted per the prompts, transferred almost all of his data and now the flash drive isn't recognized by the xbox. Unfortunately...he already deleted the data from the console $#@!. The flash is almost completely full. I saw a hint regarding setting the properties to the non default option, doesn't help. Tried rebooting with the flash in the port, doesn't help.