Path: utzoo!attcan!uunet!mcvax!enea!kth!draken!zap
From: zap@nada.kth.se (Svante Lindahl)
Newsgroups: comp.unix.questions
Subject: Re: umount, and SunOS 3.X
Summary: -b is documented, but the documentation is wrong
Keywords: Sun boot init rc.boot
Message-ID: <558@draken.nada.kth.se>
Date: 11 Sep 88 02:15:16 GMT
References: <27262@neabbs.UUCP> <520@cra2.apctrc.UUCP> <13448@mimsy.UUCP> <9192@elroy.Jpl.Nasa.Gov>
Reply-To: zap@front.se (Svante Lindahl)
Organization: Front Capital Systems, Stockholm, Sweden
Lines: 30

In article <9192@elroy.Jpl.Nasa.Gov> david@elroy.Jpl.Nasa.Gov (David Robinson) writes:
>In article <13448@mimsy.UUCP>, chris@mimsy.UUCP (Chris Torek) writes:
>< It does more than just that.  rc.boot is always run, even on a single-
>< user boot.
[....]
>Or you could use the totally undocumented "-b" option to cause the
>Sun to boot without running /etc/rc.boot and hope you are not
>too corrupted.

-b is documented. Take a look at boot(8s) and init(8).
The documentation is however incorrect. boot(8s) claims:

          -b   Pass the -b flag through the kernel to init(8)  to
               skip execution of the rc.local script.

which is not very likely, since rc.local is executed by /etc/rc and not
directly by init.

init(8) got it right though:

     		 It normally runs the sequence of commands in the
     script /etc/rc.boot (see rc(8)) to check  the  file  system.
     If passed the -b flag from the boot program, init skips this
     step.

I have not tried this. All this applies to SunOS 3.[45], I have no
idea about 4.0.

-- 
Svante Lindahl		Front Capital Systems		zap@front.se