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Date:      Sat, 16 Apr 2011 08:31:13 -0700
From:      Freddie Cash <fjwcash@gmail.com>
To:        rank1seeker@gmail.com
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: Add SUM sysctl
Message-ID:  <BANLkTinQGnAQuXnho8a-ThiF0GJ51wF8-A@mail.gmail.com>
In-Reply-To: <20110416.142444.546.5@DEV>
References:  <20110415.150349.671.1@DEV> <22B12EE4-AE7B-49F7-B6BA-3FE7F967F508@gsoft.com.au> <20110415.154921.875.2@DEV> <F8EA9C16-A114-4270-895D-477AFA2990C9@gsoft.com.au> <20110415.171211.343.3@DEV> <6F20BB76-0D6A-4AB5-99DF-15954D8C2C9D@gsoft.com.au> <20110416.111455.390.4@DEV> <D18D23C3-5179-46BE-BAA6-288B06DB0408@gsoft.com.au> <20110416.142444.546.5@DEV>

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On Sat, Apr 16, 2011 at 7:24 AM,  <rank1seeker@gmail.com> wrote:
> After compilation of kernel and world in MUM, kernel is installed in MUM,
> but to install world, we reboot into SUM, then install world. (HANDBOOK)

Note:  You do not have to be in SUM to install the world and/or the
kernel.  You can install them just fine in multi-user mode.  I do this
all the time on remote system, as dropping to SUM would knock off the
SSH connection.

All you have to do is make sure no one else is logged in, stop as many
services and daemons as possible, then do the installworld, and
reboot.

It's not recommended in the Handbook, but it's not forbidden either.

> So that is way, they both need to be installed in SUM, in one shot! Kernel
> then world!

Or ... they can be installed in MUM without issue.

> DO YOU KNOW, what to look for, in sys that will indicate to my function,
> that it is in SUM?

No network configured, no daemons running, just a single shell
running.  IOW, everything can be done manually in MUM to "simulate"
SUM.

-- 
Freddie Cash
fjwcash@gmail.com



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