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Re: DIOC{G,S}STRATEGY not implemented for all disk devices

Gary Thorpe <> writes:
> --- John Nemeth <> wrote:
>> Do these devices work using concentric cylinders similar to the way
>> magnetic media works, or do they use the one long spiral track the
>> way most optical media (and old vinyl records) work?
> Optical disks are...disks.[...]

John is (correctly) pointing out that the access characteristics for
CDs are not like those for magnetic disks because there is one long
track instead of a sequence of concentric tracks. This changes many
things, such as the seek time you can reasonably expect. His question
about whether DVDs operate the same way is a sensible one. So, are
they like CDs or not?

Perry E. Metzger      

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