# Internals

```{filtered-toctree}
:titlesonly:

:diataxis:/environment
:diataxis:/reference/uefi_variables
:diataxis:/daemon-behavior
:diataxis:/syscall-interception
:diataxis:User namespace setup </userns-idmap>
```

## Related topics

```{only} diataxis
How-to guides:

- {ref}`troubleshoot`

```

```{filtered-toctree}
:maxdepth: 1

:topical:/daemon-behavior
:topical:Debug LXD </debugging>
:topical:/environment
:topical:/syscall-interception
:topical:User namespace setup </userns-idmap>
:topical:/reference/uefi_variables
:topical:Configuration option index </config-options>
```