sysinst(8), `Installing from an unmounted filesystem'

["Rocky Hotas" <rockyhotas%post.com@localhost>]

Hi!
As regards

http://www.netbsd.org/docs/guide/en/chap-exinst.html

Items in Fig. 3.22 have changed in 8.0 installation. They are now:

Device
File system
Base directory
Binary set directory
Source set directory

Despite a quick chat on IRC, I still have some doubts.

- Which of them are mandatory and which are optional?
- Base directory should be the one where the new fs will be mounted. If its
  value is `example', does it mean that the new fs will be in /example?
- The values of Binary and Source set directory are referred to what root?
  /example?

Thank you,

Rocky