Why is my tape drive not detected on my Windows NT 4.0 system?
If you have Service Pack 4 or 6, you'll need to install the Windows NT drivers located on our website. Service Pack 6a already contains the correct NT drivers. Service Pack 5 will not support tape drives, so users should upgrade to Service Pack 6a. Obtain the latest drivers and firmware for your SCSI card. If you are using an Adaptec card, run an ASPI check, and update the ASPI layer for your card if necessary. Finally, check for proper SCSI termination and ID settings.