My USB Pen drive, has given up the ghost or so it appears. I get the following error when i try to mount it mount: /dev/sda1 is not a valid block device ________________________________________________________________________ It appears that a block on the device has become corrupted and this is preventing me from mounting it. Does anyone know anyway, in which I can rescue this device? By finding the bad blocks on it and repairing them? Cheers, Gareth