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From: Slawa Olhovchenkov <slw@zxy.spb.ru>
To: Garrett Cooper <yanegomi@gmail.com>
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Cc: Doug Barton <dougb@freebsd.org>, John Baldwin <jhb@freebsd.org>,
	Eric Masson <emss@free.fr>, svn-src-all@freebsd.org,
	src-committers@freebsd.org, svn-src-head@freebsd.org
Subject: Re: svn commit: r225201 - in head/sys: amd64/conf i386/conf
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On Sat, Aug 27, 2011 at 02:09:36PM -0700, Garrett Cooper wrote:

> >> > What drivers in GENERIC don't need to boot from disk or network?
> >> > sound only?
> >>
> >> man rc.conf, search for kld_list.
> >
> > Sorry for bad english.
> > What drivers (from current GENERIC) don't need for network or disk
> > boot and can be moved to kld_list?
> >
> > I see only sound and agp.
> 
>     The answer varies based on your deployment mechanism and
> requirements. For example: some modules like the kqemu, nvidia,
> vboxdrv, etc, etc don't need to be loaded until later on in the boot
> process. That being said, if I'm netbooting I don't need to load
> storage drivers and the like until later on (unless I want to do some
> sort of mountroot manipulation, need to have a working kernel dumpable
> device at boot, etc).
> -Garrett

No-no-no.
GENERIC placed on instalation CD/DVD and updated by freebsd-update.
So GENERIC (and modules loaded in /boot/loader.conf from instalation
image and in default install) must be enought to install in widest
environment.

If drivers moved from GENERIC to /boot/loader.conf it allow preserve
wide range of installation environment and give light way to reduce
count of loaded devices (by edit /boot/loader.conf).