Date: Mon, 19 May 2003 22:39:45 -0500 (CDT) From: Eduardo Viruena Silva <mrspock@esfm.ipn.mx> To: Joshua Oreman <oremanj@www.get-linux.org> Cc: questions@freebsd.org Subject: Re: Creating a bin or ISO image of a CD?? Message-ID: <20030519223555.A97035@Gina.esfm.ipn.mx> In-Reply-To: <20030520014513.GB65043@webserver.get-linux.org> References: <Pine.GSO.4.44L0.0305191912530.23582-100000@shell.core.com> <20030519200918.U95244@Gina.esfm.ipn.mx> <20030519192420.I24726@wonkity.com> <20030520014513.GB65043@webserver.get-linux.org>
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On Mon, 19 May 2003, Joshua Oreman wrote: > On Mon, May 19, 2003 at 07:28:45PM -0600 or thereabouts, Warren Block seemed to write: > > On Mon, 19 May 2003, Eduardo Viruena Silva wrote: > > > > > try: > > > > > > dd if=/dev/acd0c of=my_image bs=2352 > > > > Hmmm. This brings up something I've wondered about. I always use > > bs=2k to match the actual sector size of CDs. > > > > But does it matter? Is there any reason not to use a larger buffer size > > to speed up reading CDs? > > As long as you use a multiple of the same size, you should be fine. However, > the block size you pick should also be a multiple of the size of the track > you're ripping. It'll still work otherwise, but `dd' will complain. > > HTH, > -- Josh > Josh, I believe the size of the track should be a multiple of the block size. I also had the problem of reading tracks, asked freebsd-questions and I got that as the answer, I mean, they told me that audio cd use blocks of 2352 bytes length.
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