= Boot Volume Directory Structure =

This is the directory layout of the boot volume:

{{{
home/config
	<like system, but without haiku_loader, kernel_<arch>, and runtime_loader>

system
	add-ons
	apps
	bin
	boot
	cache*
	data
	demos
	develop
	documentation
	lib
	non-packaged*
	packages*
	preferences
	servers
	settings*
	var*

	haiku_loader
	kernel_<arch>
	runtime_loader

trash
}}}

The structure mostly equals the pre-package management directory structure with the following changes:
 * `common` has been removed, or more correctly it has been merged into `system`. All system-wide software is now installed (only) in `system`.
 * The `develop` directory has been removed and its contents has been moved to the `system/develop` directory.
 * The `include` directory has been removed. Its contents lives in `develop/headers` now.
 * `optional` has been removed. Optional features can just be installed via the package manager.
 * `share` and `etc` (in `common`) have been removed. Their contents goes to `data`, `documentation`, or `settings` (in `system` or, for packages installed there, in `home`) as appropriate. There's `settings/etc` which is where ported Unix software will usually store their global settings.
 * `apps` and `preferences` have been moved to `system` for consistency.
 * `system` and `home/config` each sport a `packages` directory, which contains the activated packages.
 * `system` and `home/config` themselves are mount points for two instances of the packagefs, i.e. each contains the virtually extracted contents of the activated packages in the respective `packages` subdirectory. The directories marked with `*` are "shine-through" directories. They are not provided by the packagefs, but are the underlying directories of the boot volume. Unlike the other directories they are writable.
 * `system` and `home/config` each contain a directory `non-packaged` which has the same structure as their parent directory minus the shine-through directories. In the `non-packaged` directories software can be installed the traditional -- non-packaged -- way.