This routine is called when the device-class driver is first loaded into the system. This routine performs all initialization required for the device-class driver and the device. At Init time, all calls to the SCSI driver are made through the DosDevIoctl interface. Typically, initialization performs the functions in the following list:

• Performs a return peripheral device count to determine the count of devices attached.
  
• Allocates the device.
  
• Queries the device to determine whether it is supported.
  
• Sets the return code in the request block.
  
• Returns the offsets for the end of the code and data segments.