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Date:      Sat, 13 Jul 2002 14:24:56 -0700
From:      Erick Mechler <emechler@techometer.net>
To:        Holt Grendal <holtor@yahoo.com>
Cc:        questions@FreeBSD.ORG
Subject:   Re: Unloading Kernel Modules
Message-ID:  <20020713212456.GC54898@techometer.net>
In-Reply-To: <20020713023341.71837.qmail@web11605.mail.yahoo.com>
References:  <20020713023341.71837.qmail@web11605.mail.yahoo.com>

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:: My kernal has these modules loaded:
:: 
:: > kldstat
:: Id Refs Address    Size     Name
::  1    3 0xc0100000 1bb548   kernel
::  2    1 0xc5b8d000 14000    linux.ko
::  7    1 0xc7bee000 3000     vn.ko

:: Is it safe to Unload them or will this Crash the system?

You only need the linux module if you want to run Linux binaries on your
FreeBSD system.  Some common apps that need this are Acroread, StarOffice,
etc.  The vn(4) is used, for example, to create swapfiles on your 
filesystems.

You can disable loading of the linux module by setting linux_enable="NO" in
/etc/rc.conf, and you can check what's using the vn driver with the 
vnconfig(8) utility.

--Erick

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