problem with UDMA mode on XP1000

Kevin A. Pieckiel kpieckiel-freebsd-alpha at smartrafficenter.org
Tue Apr 15 08:42:40 PDT 2003


On Mon, Apr 14, 2003 at 09:22:00AM -0400, Andrew Gallatin wrote:

>   Rant aside, ATA cables are VERY sensative to EMI noise.  What's
>   happening to you is that the cable is either badly twisted, running
>   too close to an EMI source, or both.  This is causing the transfers
>   across the cable between the controller and the disk to be corrupted
>   (that's the ICRC error you're seeing).  This is NOT the fault of the
>   software, rather its a real hardware problemn with your setup.  The
>   software is saving you from serious disk corruption.

Are these types of issues IDE specific, or are there similar issues with
SCSI cabling as well?

Kevin

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