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SUMMARY: Maxtor ATA133 (Promise PDC20269) issues



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(Sorry for the delay, I mailed this long ago from a dialup account in
Thailand, but it got deferred as spam, and then I changed ISPs.)

Thanks to Calvin Dodge and Robert A. Vincent II for their feedback.
Fortunately, I've learned a little more since I first wrote this summary.

On Saturday 11 January 2003 04:02 pm, Jason Smith wrote:
> What started as a simple task is turning into a days-long frustration.  The
> issue is that I'm trying to use a Maxtor ATA133 IDE controller card for use
> in software RAID.  These cards us a Promise PDC20269 chip version 2.20 B10.
>
> It seems like whatever I do, I can't get linux to grok this card.

Okay, as I suspected, I actually had a hardware problem with the PCI on the
motherboard.  I plugged the computer in to a 220V system after shipping from
America (110V), and let the magic smoke out of the power supply.  I replaced
it, but apparently, the motherboard took a hit too, but only on the PCI
system, as I didn't notice until now.

Everything is working find, and the cards are performing well.  A few
comments:
* You may want to tell the kernel "idex=ata66" for each ide controller (2 per
card) to force this mode.  Note: this actually enables all ata66, ata100,
ata133, etc.
* This driver should not be confused with the Promise Fasttrak product, which
is an ATA RAID controller, which comes with a proprietary kernel module that
"only runs on Red Hat 7.3 and earlier."  I don't have this card, so I don't
know much more.  There's an ATA-RAID-HOWTO at http://www.murty.net/ataraid/
* PDC20269 reports all drives are in PIO mode, but (at least) using hdparm,
they actually are using udma.
* _Always_ remember: v = ir, p = vi.

- --
Jason Smith
Open Enterprise Systems
Bangkok, Thailand
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