On Fri, 25 Aug 2000, Jamie Hermans wrote:
> I am having an issue with the wd driver (from FBSD 3.51). Once a customer
> kernel (having the flags 0xa0ffa0ff for wd) is booted, I get screen-full's
> of this error message when there is any hard drive access:
>
> DMA failure, DMA status 5<active>
>
> I can "slow down" or degrade my DMA settings in the BIOS to avoid this
> message, but I'm sure I am taking a performance penalty in doing this.
It may be that:
a) your cable is damaged;
b) your system is too noisy;
c) your disks proclaim UDMA capability but can't actually deliver it.
> http://www.freebsd.org/cgi/mid.cgi?db=mid&[EMAIL PROTECTED]
>
> ... where this was covered back in December 1999 - I had hoped that this
> would have been resolved by now.
>
> System hardware - Maxtor UDMA66 drive, motherboard only supports UDMA33
> however, so that's not really an issue.
I'd suggest upgrading to a proper DMA66 cable and see if that helps.
> My question ... can I use the ad driver from 4.x with 3.51-RELEASE? This
> problem doesn't occur under 4.0 or 4.1-RELEASE/STABLE. If this is possible
> ... how?
No, the ata driver is not available on 3.X.
Doug White | FreeBSD: The Power to Serve
[EMAIL PROTECTED] | www.FreeBSD.org
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