cat /dev/cdrom > mydisk.iso

Kurt Wall kwall
Fri Oct 22 10:53:59 PDT 2004


On Fri, Oct 22, 2004 at 10:03:31AM -0500, Net Llama! took 26 lines to write:
> On Fri, 22 Oct 2004, Kurt Wall wrote:
> > On Fri, Oct 22, 2004 at 05:54:31AM -0700, Shawn Tayler took 39 lines to write:
> > > On Thu, 21 Oct 2004 22:33:13 -0700 Shawn Tayler <stayler at xmtservices.net>
> > > exclaimed:
> > >
> > > > I always used bs=1k when dd'ing iso's...
> > >
> > > I am curious about the difference when the bs=1k as opposed to what you use
> > > Kurt.  Is there an advantage?
> >
> > Beyond reading and writing larger chunks of data at a time, not
> > necessarily. On the other hand, CD-ROMs have a natural block size of 2048
> > bytes, so perhaps reading and writing in 2k blocks is the proper way to go.
> > That's sheer speculation, of course.
> 
> hrmmm, what does dd default to when the bs isn't specified?  i've never
> specified it for ripping CD's, and i always get good results.

The default is 512 bytes.

Kurt
-- 
I've enjoyed just about as much of this as I can stand.


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