Date: Tue, 20 May 2003 16:46:01 -0600 (MDT) From: Warren Block <wblock@wonkity.com> To: Chuck Swiger <cswiger@mac.com> Cc: FreeBSD-Questions@freebsd.org Subject: Re: Creating a bin or ISO image of a CD?? Message-ID: <20030520164422.G26888@wonkity.com> In-Reply-To: <3ECA7806.9080502@mac.com> References: <Pine.GSO.4.44L0.0305191912530.23582-100000@shell.core.com> <20030519200918.U95244@Gina.esfm.ipn.mx> <20030519192420.I24726@wonkity.com> <3ECA7806.9080502@mac.com>
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On Tue, 20 May 2003, Chuck Swiger wrote: > Warren Block wrote: > > Hmmm. This brings up something I've wondered about. I always use > > bs=2k to match the actual sector size of CDs. > > The "sector size" of a CD isn't constant, or perhaps it would be better > to say that the size depends on whether you want to consider the raw > data including the Reed-Solomon ECC data (and maybe the subchannel info, > too-- see DAO96 as a reference keyword), or the data post-ECC. A little searching later... I can't really tell, but it looks like DAO96 applies to audio CDs. I'm talking about ISO9660 data CDs; isn't the block size/sector size on them a constant 2K? -Warren Block * Rapid City, South Dakota USA
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