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SubjectRe: IDE-SCSI Hard Crash
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> > This has been observed under WinXX and DOS on various chipsets.
> > The worst case is a cd-cd copy. The so called fast ide-cdroms spin up and
> > down and the delays with cause the buffer to underrun.
>
> But why doesn't the buffer overrun happen with DMA off?

The transfer without dma is supposed to be a little slower.
This could be delay enough to avoid timeout on the fast ide-cdrom.

If that's all, consider modifying cdrecord so it polls the reading
cdrom now and then preventing timeout.
Or use a smaller buffer so there won't be time for timing out.
Or a much bigger buffer, so there will be time for spinning up.

Helge Hafting


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