# Chapter 2: Operating system organization

```{toctree}
:maxdepth: 1

0-introduction.md
1-Abstracting_physical_resources.md
2-User_mode_supervisor_mode_and_system_calls.md
3-Kernel_organization.md
4-Code_xv6_organization.md
5-Process_overview.md
6-Code_starting_xv6_the_first_process_and_system_call.md