[ocicat]

Originally Posted by Senjogahara

But as I do to begin the system?

• If you are unclear on how to shut down a running system following installation, you will want to read Section 3.13 of the NetBSD Guide assuming you have installed NetBSD 5.0.
• If your question is on starting NetBSD following installation, study Section 5 of the NetBSD Guide.
• iBook specific information can be found at the following:
  
  http://netbsd.org/ports/macppc/faq.html
  
  ...and the following:
  
  http://netbsd.org/ports/macppc/

It sounds like you are new to both NetBSD & Unix. There is a lot you will gain from reading. Study the NetBSD documentation & go to a local library to find out what introductory books on Unix are available.