Index: head/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c
===================================================================
--- head/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c
+++ head/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c
@@ -2053,6 +2053,17 @@
 	return(0);
 }
 
+static uint32_t
+is_scsi_valid(const struct scsi_inquiry_data *inq_data)
+{
+	u_int8_t type;
+	type = SID_TYPE(inq_data);
+	if (type == T_NODEVICE)
+		return (0);
+	if (SID_QUAL(inq_data) == SID_QUAL_BAD_LU)
+		return (0);
+	return (1);
+}
 /**
  * @brief completion function before returning to CAM
  *
@@ -2164,32 +2175,46 @@
 			ccb->ccb_h.status |= CAM_REQ_CMP;
 		}
 
-		if (cmd->opcode == INQUIRY) {
+		if (cmd->opcode == INQUIRY &&
+		    vm_srb->srb_status == SRB_STATUS_SUCCESS) {
+			int resp_xfer_len, resp_buf_len, data_len;
 			struct scsi_inquiry_data *inq_data =
 			    (struct scsi_inquiry_data *)csio->data_ptr;
-			uint8_t *resp_buf = (uint8_t *)csio->data_ptr;
-			int resp_xfer_len, resp_buf_len, data_len;
-
 			/* Get the buffer length reported by host */
 			resp_xfer_len = vm_srb->transfer_len;
+			uint8_t *resp_buf = (uint8_t *)csio->data_ptr;
+
 			/* Get the available buffer length */
 			resp_buf_len = resp_xfer_len >= 5 ? resp_buf[4] + 5 : 0;
 			data_len = (resp_buf_len < resp_xfer_len) ?
 			    resp_buf_len : resp_xfer_len;
-
 			if (bootverbose && data_len >= 5) {
 				xpt_print(ccb->ccb_h.path, "storvsc inquiry "
 				    "(%d) [%x %x %x %x %x ... ]\n", data_len,
 				    resp_buf[0], resp_buf[1], resp_buf[2],
 				    resp_buf[3], resp_buf[4]);
 			}
-			if (vm_srb->srb_status == SRB_STATUS_SUCCESS &&
-			    data_len >= SHORT_INQUIRY_LENGTH) {
+			/*
+			 * XXX: Manually fix the wrong response returned from WS2012
+			 */
+			if (!is_scsi_valid(inq_data) &&
+			    (vmstor_proto_version == VMSTOR_PROTOCOL_VERSION_WIN8_1 ||
+			    vmstor_proto_version == VMSTOR_PROTOCOL_VERSION_WIN8 ||
+			    vmstor_proto_version == VMSTOR_PROTOCOL_VERSION_WIN7)) {
+				if (data_len >= 4 &&
+				    (resp_buf[2] == 0 || resp_buf[3] == 0)) {
+					resp_buf[2] = 5; // verion=5 means SPC-3
+					resp_buf[3] = 2; // resp fmt must be 2
+					if (bootverbose)
+						xpt_print(ccb->ccb_h.path,
+						    "fix version and resp fmt for 0x%x\n",
+						    vmstor_proto_version);
+				}
+			} else if (data_len >= SHORT_INQUIRY_LENGTH) {
 				char vendor[16];
 
 				cam_strvis(vendor, inq_data->vendor,
 				    sizeof(inq_data->vendor), sizeof(vendor));
-
 				/*
 				 * XXX: Upgrade SPC2 to SPC3 if host is WIN8 or
 				 * WIN2012 R2 in order to support UNMAP feature.