在内核引导之后，就可以正式装备根文件系统了(通过pivot _ root)：此时会将initrd根文件系统卸载掉，并挂载真正的根文件系统。

After the kernel is booted, the root file system is pivoted (via pivot_root) where the initrd root file system is unmounted and the real root file system is mounted.

youdao

使用2.4.16 +会更好，因为稳固的ext3文件系统代码最终是集成到从2.4.15 - pre2发行版开始的正式Linus内核中的。

Even better, use 2.4.16 +, since the rock-solid ext3 filesystem code was finally integrated into the official Linus kernel starting with the 2.4.15-pre2 release.

youdao