DVD cloning tool

David Kelly dkelly at hiwaay.net
Fri Dec 5 13:18:37 PST 2008

On Fri, Dec 05, 2008 at 08:45:52PM +0100, Wojciech Puchar wrote:
> >
> >Agree that dd is good for simple CDs and DVDs but can't say that I know
> >it will behave on multi-session or multi-format discs.
> the question was about DVD. dvd are not produced multisession or 
> multiformat.

The above is contradicted below. *These* DVDs in question are known not

> and when copying multisession data DVD, it's much better to copy off
> all files, possible add more and write as single session.

Depends on what your homework assignment is. In the data center I was
talking about one could make a good argument that the duplicate was to
be multi-session if the original was. We don't know for sure it doesn't
contain a presentation application or something counting on the multiple

> actually it's rarely used. i never recorded even one multisession DVD
> except once to test if it works :)

On DVD-R it works badly, can only write 4 or 5 sessions and there is
some huge buffer zone between each session, 200 to 500 MB.

> with CD - you are right, but it was already told that readcd is OK.
> unfortunately AFAIK there is no similar tool for DVDs

Thought readcd (out of cdrtools) also knew how to read DVD?

David Kelly N4HHE, dkelly at HiWAAY.net
Whom computers would destroy, they must first drive mad.

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