No Drive Shown In Explorer For SCSI CD-R

Why isn’t there any drive letters shown in the Windows Explorer for my Yamaha SCSI CDR drive? The AdvanSys SCSI Host Adapter driver was installed properly and there’s no IRQ,IO Port and DMA conflict. While booting, the drive is shown and detected asYamaha CDR400t in the AdvanSys SCSI Host Adapter Utility. Do I need to install the Yamaha CDR driver or do I have to add any command lines in my config.sys and autoexec.bat?