I have a cd-writer attached on the same secondary IDE channel as another
IDE hard drive..
Now... when cdrecord is accessing the cdwriter... i have discovered that
the IDE hard drive that is on the same IDE secondary channel as the
writer... has to wait until cdrecord is finished with the writer... before
that hard drive can be accessed..
This is of course using the 2.2.1 kernel with an acx patch..
Pat.
On Wed, 10 Feb 1999, Thomas Molina wrote:
> The HOWTOs I read on implementing CD-RW indicated you needed to disable
> generic PCI IDE support when compiling the kernel. The option to turn
> on automatic DMA transfers only appears when that support is turned on.
> It shouldn't be a problem if that advice is followed.
>
> In any case, I noticed that when built that way I don't get DMA enabled
> for a hard drive which has a CDROM/CDR/CDRW on the same IDE interface.
>
> On Tue, 9 Feb 1999, Meelis Roos wrote:
>
> > AMH> I assume that you disable DMA transfers on the ide-cd reader/writer?
> > AMH> If you did not do this, it will generally cause buffer underruns during
> > AMH> the burn process. Thus you end up with many pretty coasters or shiny
> > AMH> skeet birds.
> >
> > Is this a bug in linux ide/ide-scsi implementation?
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