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Date:      Sat, 14 Mar 1998 12:00:26 +1030
From:      Greg Lehey <grog@lemis.com>
To:        Cory Kempf <ckempf@enigami.com>, Kent Vander Velden <graphix@toybox.cc.iastate.edu>, freebsd-questions@FreeBSD.ORG
Subject:   Re: root filesystem and -current
Message-ID:  <19980314120026.09622@freebie.lemis.com>
In-Reply-To: <v04003a13b12f8002d3ad@[208.140.182.45]>; from Cory Kempf on Fri, Mar 13, 1998 at 08:03:06PM -0500
References:  <v04003a0ab12f0521f376@[208.140.182.45]>; <199803130024.SAA11363@toybox.cc.iastate.edu>; <199803130024.SAA11363@toybox.cc.iastate.edu> <19980313133514.09198@freebie.lemis.com> <v04003a0ab12f0521f376@[208.140.182.45]> <19980314101858.58251@freebie.lemis.com> <v04003a13b12f8002d3ad@[208.140.182.45]>

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On Fri, 13 March 1998 at 20:03:06 -0500, Cory Kempf wrote:
> At 18:48 -0500 98.03.13, Greg Lehey wrote:
>> On Fri, 13 March 1998 at 10:50:10 -0500, Cory Kempf wrote:
>>> At 22:05 -0500 98.03.12, Greg Lehey wrote:
>>>> On Thu, 12 March 1998 at 18:24:28 -0600, Kent Vander Velden wrote:
>>>> The big one: IF YOU ARE RUNNING -CURRENT, SUBSCRIBE TO THE
>>>> FREEBSD-CURRENT MAILING LIST!
>>>
>>> Tried that.  Signal was rather low, noise was way too high.
>>
>> You're the first person to say that.
>
> I was on that list for a total of 24 hours, between the 3rd and 4th of
> March.  I signed on to that and several other lists at the same time.
>
> In that time, there were 121 postings.  As near as I can tell, without
> reading all, but based on subject lines and a random sampling, 112 of those
> were on the subject of raising money.  Noise, IMO, and rather loud.  The
> merits of that discussion is a side issue.

Ah, yes, I fear you picked a poor time.  Of all the time I've been on
-current, that was the greatest volume, one that provoked Jordan to
threaten to take people off the list unless they shut up.  It's not
normally like that, and I reiterate (more quietly this time): If you
are running -current, subscribe to the FreeBSD-current mailing list!

> The other 9 looked to be technical, but had not related to the problems
> with system.  Even counting those postings as signal (they weren't for me,
> but I assume they were for someone), that is a ratio of 0.08%

Most messages on -current won't directly relate to your immediate
problems.  But it's the only place to find out what's going on, and
you desperately need it.

>>>> What has happened is relatively complicated: they've eliminated the
>>>> "compatibility slice", so you will no longer be able to mount
>>>> /dev/sd0a.  Use /dev/sd0s1a instead (in /etc/fstab).  Don't be put off
>                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>>> by the fact that it will then claim to mount /dev/sd0s2a; that's a
>>>> known bug.
>>>
>>> Tried that.
>>
>> What did you do?
>
> What you said: "Use /dev/sd0s1a instead (in /etc/fstab)."
>
> Changed the entry in /etc/fstab for / from /dev/sd0a to /dev/sd0s1a.
>
> Reboot.
>
>>> Still Panics on boot.
>>
>> What's the panic?
>
> I will forward my prior postings.  The rest of the list probably doesn't
> need the reruns.
>
>>> Putting it back via a fixit floppy after root refused to mount
>>> because it had the wrong device in /etc/fstab was real fun.
>>
>> You don't need that.  Just boot the old kernel.
>
> Considering that the kernel hadn't changed, that would be a neat trick.
> Unless there is another way to edit files on / when / won't mount?

We're out of sync here.  Your original message suggested that you had
just built a new -current kernel, and that it would now not boot.
What about the previous one?

>> He didn't know how to recover from the problem.
>
> Considering that I did recover, and in fairly short order, I would say that
> I did understand how to do so.  But hey, I am always willing to learn: mess
> up your /etc/fstab file, reboot, and recover.  Then tell me an easier way
> to do so that via the fixit floppy.

Boot: kernel.old

Greg

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