在没有存储设备的嵌入式系统中，initrd是永久的根文件系统。

In embedded systems with no mutable storage, the initrd is the permanent root file system.

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介绍了存储设备的分区以及FAT文件结构，并给出了在嵌入式系统中，实现FAT文件系统的方法。

This paper presents the storage device sector location and FAT document structure. Then it introduces how to design the FAT file management system in embedded system.

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介绍US B设备类(以海量存储类协议为主)以及如何在嵌入式系统中实现USB接口。

Introduce the USB device genus (Mass Storage) and how to realize the USB interface in the embedded system.

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