Bruce Cran wrote:
If you have a look at sysctl hw.ata tree, it'll give you the clue on how to overcome this behaviuor. In simple words, what you need is to pootYour CD drive should indeed support UDMA33 - my DVD drive supports UDMA33, and my CDRW supports multi-word DMA, even though my BIOS only ever configures it for PIO4, and my DVD for UDMA33. FreeBSD only ever configures them for PIO during bootup, but, using the atacontrol program, it configures them both for maximum speed, even knowing they _can_ only do UDMA33,WDMA2.
hw.ata.atapi_dma=1
in your /boot/loader.conf and have the nirvana of automatic DMA detection...
--
/Voland Vadim Belman
http://www.lflat.org
http://www.lflat.net
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