The initrd image is actually a RAM disk that contains a small file system with basic configuration files, binaries, libraries, and drivers.

initrd映像实际上是一个RAM磁盘，其中包含带有基本配置文件、二进制文件、库和驱动程序的小型文件系统。

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On the Apple Mac, for instance, the drivers for the hardware devices are usually special files that go in the System Extensions folder.

在苹果机上，设备驱动程序，是存放在一个叫做系统扩展文件夹中的特殊文件。

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