Peter J. Philipp [p...@centroid.eu] wrote:
> pciide0 at pci0 dev 31 function 2 "Intel 8 Series SATA" rev 0x05: DMA 
> (unsupported), channel 0 configured to native-PCI, channel 1 configured to 
> native-PCI

This is why IDE mode is so slow - pciide doesn't actually support your
controller.

Here's how "Intel Series 7 SATA" was supported:
http://www.openbsd.org/cgi-bin/cvsweb/src/sys/dev/pci/pciide.c.diff?r1=1.340;r2=1.341

Chances are "Intel Series 8 SATA" is very similar.

> ahci2 at pci0 dev 31 function 2 "Intel 8 Series AHCI" rev 0x05: msi, AHCI 1.3
> ahci2: device on port 1 didn't come ready, TFD: 0x80<BSY>
> ahci2: stopping the port, softreset slot 31 was still active.
> ahci2: unable to communicate with device on port 1

I might have a patch to try. 

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