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Date:      Sun, 5 Jan 2003 12:21:46 +0100
From:      Wilko Bulte <wkb@freebie.xs4all.nl>
To:        Dmitry Morozovsky <marck@rinet.ru>
Cc:        "M. Warner Losh" <imp@bsdimp.com>, freebsd-hackers@FreeBSD.ORG
Subject:   Re: freebsd running on a cdrom
Message-ID:  <20030105122146.C43208@freebie.xs4all.nl>
In-Reply-To: <20030105131030.X264@woozle.rinet.ru>; from marck@rinet.ru on Sun, Jan 05, 2003 at 01:13:33PM %2B0300
References:  <20030102220350.5971.qmail@web41013.mail.yahoo.com> <20030105001014.GA76756@cs.huji.ac.il> <20030105.001255.53237870.imp@bsdimp.com> <20030105131030.X264@woozle.rinet.ru>

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On Sun, Jan 05, 2003 at 01:13:33PM +0300, Dmitry Morozovsky wrote:
> On Sun, 5 Jan 2003, M. Warner Losh wrote:
> 
> MWL> : CD-ROM is not what I would call a reliable media.  May I suggest
> MWL> : booting from the network (PXE) or booting from a hard disk and
> MWL> : mounting the partitions read-only?
> MWL>
> MWL> It is usually the case that solid-state media, properly configured, is
> MWL> more reliable.  CF cards have a TrueIDE mode that allows them to be
> MWL> accessed as a disk on the IDE bus.  Timing Solutions uses this
> MWL> technology in all its embedded systems and we've noticed a huge
> MWL> reduction in RMAs from the previous generation of systems with IDE
> MWL> hard disks in them.
> MWL>
> MWL> I'd suspect that cdrom drives will break more often than hard disks in
> MWL> harsh environments.
> 
> Well, while I'd certainly agree with you regarding reliability (BTW, how many
> _read_ cycles do contemporary flashdisks support?), there is at least one major
> question: where to boot from? especially in the case of standalone
> moving-parts-free router ;-)

You can boot from CompactFlash cards, they behave like IDE drives.

-- 
|   / o / /_  _   		wilko@FreeBSD.org
|/|/ / / /(  (_)  Bulte				

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