mac scsi

example code:
Developer/Examples/IOKit/scsi/SCSITaskLib/Authoring/UnixTool/AuthoringUnitTestUnixTool.c

IOSCSIPeripheralDeviceType00 for block storage devices such as internal disk drives
IOSCSIPeripheralDeviceType05 for multimedia devices such as CD and DVD drives
IOSCSIPeripheralDeviceType07 for magneto-optical devices
IOSCSIPeripheralDeviceType0E for reduced block command devices such as flash cards and
smart media devices