> For the complete documentation index, see [llms.txt](https://nankai.gitbook.io/ucore-os-on-risc-v64/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://nankai.gitbook.io/ucore-os-on-risc-v64/lab8.md).

# LAB8：文件系统

我们来到了最后一个lab。**文件系统(file system)**，指的是操作系统中管理（硬盘上）持久存储数据的模块。