I was given a SCSI CD Disk Drive, basically, it reads a large floppy like CD thats 3.5 roughtly. Thing is that I was given it to get music off a bunch of these disks. However, it comes back that the data is curppted or something at times. When I tried it with the other one it had no trouble what so ever. I wondered if these didnt use a laser to read the disks that needs cleaned.