> aceride0 at pci0 dev 13 function 0 > aceride0: Acer Labs M5229 UDMA IDE Controller (rev. 0xc3) i notice that openbsd disables some DMA on this device: if (rev < 0xC4) sc->sc_wdcdev.cap |= WDC_CAPABILITY_NO_ATAPI_DMA; i guess it isn't stable or our driver is broken, and this is necessary for at least now. .mrg.