Posted by Bill's News on 05/21/06 19:46

Voinin wrote:
> When I record a DVD I turn verification on. (I got into the habit
> when I used a tape backup drive back in the day.) When the disc is
> being burned it starts out at 8x and finishes at 8x. So it seems
> that during burning it's using CLV mode. However, when the
> verification process is running the speed varies from slow to about
> 8x at the end. So it's apparently using CAV mode. But when I rip a
> single-layer DVD the download speed approaches 16x towards the end
> of
> the read. This process, too, apparently uses CAV mode.
>
> My question: Why does the verification process take longer to read
> than it does when burning or when ripping a DVD?
>
> FWIW I'm using Nero 7, but this phenomenon happens with other
> software I have used to burn discs.

If your drive supports PIE/PIF, use Nero's tool kit item "CDSpeed.exe"
to check for errors from which the drive is recovering. This will
also give you a good understanding of your media quality and is a much
better test than "verify."

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