From owner-freebsd-current@FreeBSD.ORG  Sat Sep  4 15:53:02 2004
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id D1FF616A4CE
	for <current@freebsd.org>; Sat,  4 Sep 2004 15:53:02 +0000 (GMT)
Received: from salmon.maths.tcd.ie (salmon.maths.tcd.ie [134.226.81.11])
	by mx1.FreeBSD.org (Postfix) with SMTP id 0DDC243D1D
	for <current@freebsd.org>; Sat,  4 Sep 2004 15:53:02 +0000 (GMT)
	(envelope-from iedowse@maths.tcd.ie)
Received: from walton.maths.tcd.ie by salmon.maths.tcd.ie with SMTP
          id <aa45226@salmon>; 4 Sep 2004 16:53:01 +0100 (BST)
To: Deng XueFeng <dsnofe@msn.com>
In-Reply-To: Your message of "Sat, 04 Sep 2004 23:06:37 +0800."
             <20040904230250.60A0.DSNOFE@msn.com> 
Date: Sat, 04 Sep 2004 16:53:01 +0100
From: Ian Dowse <iedowse@maths.tcd.ie>
Message-ID: <200409041653.aa45226@salmon.maths.tcd.ie>
cc: current@freebsd.org
Subject: Re: 6-current's BTX loader auto reboot after make world. 
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 04 Sep 2004 15:53:02 -0000

In message <20040904230250.60A0.DSNOFE@msn.com>, Deng XueFeng writes:
>i use:
>
>0:ad(0,a)/boot/loader.old
>
>to enter system, then:
># mv loader.old loader.
>
>reboot, all is ok.
>My last build world is 2004-08-02.
>Is there any change to loader during there days?

The amd64 module support and a few other changes went in during
that timeframe. If possible, could you try to track down which
changes are to blame? This will involve using cvs or cvsup to update
the boot code to a few different versions and test if you get a
working loader.

First make sure you have a working copy of the loader (e.g. copy
to /boot/loader.good and test that it works).

To test each case, you'll first need to update your boot code sources
to a particular date. With CVS, you'd use

	cd /usr/src/sys/boot
	env TZ=GMT cvs update -D'2004/08/28 14:00:00' (for example)

With cvsup you can add a 'date=2004.08.28.14.00.00' for example to
your supfile and `cvsup ... -i src/sys/boot supfile'. To build and
install the loader you'll need to do something like:

	cd /usr/src/sys/boot
	make clean
	make
	make install

Some dates that are worth checking are:
	2004/08/28 14:00:00 GMT	(before amd64 loader work started)
	2004/08/28 17:00:00 GMT	(after addition of helper functions)
	2004/08/29 00:00:00 GMT	(after relocation changes)
	2004/08/29 02:00:00 GMT	(all amd64 loader changes complete)

It would be great if you could narrow down when the problem was
introduced this way, as it may be hard to find otherwise.

Ian