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Date: Sat, 04 Nov 2006 17:52:49 -0700
From: Scott Long <scottl@samsco.org>
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To: Wilko Bulte <wb@freebie.xs4all.nl>
References: <539c60b90611040831l3101a720i6cb87ee1cb8272ad@mail.gmail.com>	<454CC513.10707@zedat.fu-berlin.de>
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Cc: freebsd@bitfreak.org, freebsd-current@freebsd.org,
	"O. Hartmann" <ohartman@zedat.fu-berlin.de>
Subject: Re: read cd's but not dvd's?
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Wilko Bulte wrote:
> On Sat, Nov 04, 2006 at 11:44:08AM -0800, freebsd@bitfreak.org wrote..
>> O. Hartmann wrote:
>>> I also had never success mounting several commercial cinema-scope DVDs 
>>> due to an unrecognized non-ISO9660 format - maybe some kind of copy 
>>> prevention.
>> That would probably be because DVDs use the UDF format.  ISO9660 is only 
>> for CDs.
> 
> Not true, there are also DVDs with ISO9660.  Quite a few actually.
> 

Most commercial DVD movies contain both a UDF and an ISO9660 filesystem.
I haven't purchased a lot of DVD ROMs myself, but most I've seen have
been ISO9660.  For storing write-once data, ISO9660 is great format; 
it's simple and well supported.

Scott