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Date:      Thu, 13 Feb 2003 10:36:22 -0500
From:      Steve Shorter <steve@nomad.lets.net>
To:        freebsd-questions@freebsd.org
Subject:   Re: cannot boot from SCSI disk
Message-ID:  <20030213103622.A1070@nomad.lets.net>
In-Reply-To: <20030213142858.GL81356@freepuppy.bellavista.cz>; from neuhauser@bellavista.cz on Thu, Feb 13, 2003 at 03:28:58PM %2B0100
References:  <20030212145249.A429@nomad.lets.net> <20030213142858.GL81356@freepuppy.bellavista.cz>

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On Thu, Feb 13, 2003 at 03:28:58PM +0100, Roman Neuhauser wrote:
> 
>     interesting. all I see is backpedalling from dangerously dedicated
>     disks in /stand/sysinstall and elsewhere


	Many IDE drives will not boot if setup in "dangerously dedicated"
mode. So,  for "normal" people who are installing for personal/desktop
use and/or dual boot "home" systems the issue is confusing and often
results in failed installlations on many typical "home" installs.

> , and the article you linked below says
>
>     "Remember, dedicated mode disks sometimes cannot be booted by the PC
>     architecture."
>

	This is correct. Particularly for IDE. But the opposite is true
for server class SCSI systems. I have had IDE systems that would not
boot if setup in "dedicated mode". I have had SCSI systems that would 
not boot unless they were setup in "dedicated mode".


> > 	In general SCSI disk that only contain FreeBSD should be
> > formated/labled in "dedicated mode" IMHO.
> 
>     what source do you have this information from?
> 

	I have never personally had a SCSI system that *didn't* boot
when setup in "dedicated mode". Dedicated mode is simpler so I prefer it.


	-steve


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