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Date: Mon, 02 Mar 2009 17:47:47 +0000
From: Ricardo Jesus <ricardo.meb.jesus@gmail.com>
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Cc: freebsd-questions@freebsd.org
Subject: Re: bsd.rd for FreeBSD install
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new_guy wrote:
> Hi,
> 
> We normally use OpenBSD, but would like to try FreeBSD on a test system.
> Usually, when updating from one OpenBSD release to another, we do so by
> downloading the latest bsd.rd and booting from that to complete the install.
> Our machines have no optical drives. Does FreeBSD have a similar method to
> installation? 
> 
> Thanks!

As far as I know OpenBSD advises on binary upgrades so I'd say you're 
probably looking for freebsd-update as it provides binary updates. This 
utility is great for binary updates to both kernel and world.

Do take a look at FreeBSD's Handbook.

To update third party applications e.g. ports read this: 
http://www.freebsd.org/doc/en/books/handbook/ports.html

If you want to compile a custom kernel: 
http://www.freebsd.org/doc/en/books/handbook/kernelconfig.html

Update and upgrade methods are described here: 
http://www.freebsd.org/doc/en/books/handbook/updating-upgrading.html

Have fun,
Ricardo Jesus.