MLX_CMD_ENQSYSDRIVE
mlx_enquire(mlx, MLX_CMD_ENQSYSDRIVE,
case MLX_CMD_ENQSYSDRIVE:
if (mc->mc_mbox[0] == MLX_CMD_ENQSYSDRIVE)
mes = mlx_enquire(mlx, MLX_CMD_ENQSYSDRIVE,