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From: heiser@tdw206.ed.ray.com (Bill Heiser - Unix Sys Admin)
Newsgroups: comp.unix.admin
Subject: installing new kernels
Message-ID: <2534@sud509.ed.ray.com>
Date: 6 Jun 91 21:35:22 GMT
Article-I.D.: sud509.2534
Sender: heiser@tdw206.ed.ray.com (Bill Heiser - Unix Sys Admin @ Raytheon Company, Sudbury MA)
Organization: Raytheon Company, Equipment Division, Sudbury MA
Lines: 27

I've always been under the impression that a machine should be
in single user mode before installing a new kernel.  As such,
I've always brought the machine down before removing /unix and
installing the new version there.

If a machine is in a controlled lab environment where no one
else will be logged in, is there any reason not to install a
new /unix while in multi-user mode (with me being logged in 
across the ethernet)?  The procedure would be something like this:

- build new kernel
- get rid of all logged in users
- cd /
- remove (or move) old /unix
- cp in new unix
- shutdown -r (or whatever to reboot)

Is there a problem with this?  All the manuals, etc, always
say to be in single user.  Is there a reason for that?

Thanks in advance,
Bill


-- 
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