1. Check to make sure the drive is recognize on the SCSI Bus by checking the registry. 1a. Under Hardware\devicemap\scsi\ is a list of the recognized devices. 1b. Check to see if a driver claimed the device. A device number value will be present if it was 2. Check the termination on the SCSI Bus. There should be one terminator on each end of the bus. 3. Check the cable connections. Sometimes a loose cable is the cause of a problem. 4. Check to make sure the correct type of media is in the tape drive. An example of a mad match is a 2.0 Gig 1/4 inch tape in a 150 Meg tape drive. 5. Start with a new tape. Some drive will lock up if they have been used by a more featured drive. 6. Try the tape drive on its own controller. Sometimes problems are caused by conflicts between different devices on the same bus. 7. Try a different type of controller.