I have got external portable hard disk Toshiba 40 GB with two partitions , when I plugged it into USB port, always I am receiving these annoying screens.
http://img71.imageshack.us/img71/2664/mobileharddiskandthisannoyings.jpg
http://img71.imageshack.us/img71/2664/mobileharddiskandthisannoyings.jpg