MTD(memory technology device内存技术设备)是用于访问memory设备（ROM、flash）的Linux的子系统。MTD的主要目的是为了使新的memory设备的驱动更加简单，为此它在硬件和上层之间提供了一个抽象的接口。-MTD (memory technology device memory technology equipment) is the equipment for accessing memory (ROM, flash) Linux subsystem. MTD's main purpose is to make the new memory devices drive more simple, for its hardware and the upper between an abstract interface.