Creating a bin or ISO image of a CD??
Joshua Oreman
oremanj at webserver.get-linux.org
Mon May 19 21:10:02 PDT 2003
On Mon, May 19, 2003 at 10:39:45PM -0500 or thereabouts, Eduardo Viruena Silva seemed to write:
> 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.
But when you multiply the block size to speed things up, it might
not be exact.
-- Josh
>
> 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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