> For the complete documentation index, see [llms.txt](https://xiayingp.gitbook.io/build_a_os/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xiayingp.gitbook.io/build_a_os/file-system/overview-and-disk-layout.md).

# Overview and Disk Layout

7 layers of file system

![](https://1274781047-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M13JlZNu0b_edmxHTQk%2F-M4bkWQkAYTC0MsyiUc0%2F-M4bkzSJPYxy25PHRzlV%2Fimage.png?alt=media\&token=bdd124f0-3e84-4681-b14a-e73431d87e48)

## Disk Layout 

`[ boot block | super block | log | inode blocks | free bit map | data blocks]`