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Date: Wed, 05 Oct 2005 11:55:05 +0300
From: Pertti Kosunen <pertti.kosunen@pp.nic.fi>
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To: Jeremie Le Hen <jeremie@le-hen.org>
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Cc: freebsd-current@freebsd.org
Subject: Re: ATA/DMA problem after reboot
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Jeremie Le Hen wrote:

>How do I set this at boot time ?  There may be a tunable or something
>allowing to do this.  My problem indeed occurs before / is even
>mounted.
>

Disable dma at boot and enable in rc.local.

/boot/loader.conf
hw.ata.ata_dma="0"
hw.ata.atapi_dma="0"

/etc/rc.local
#!/bin/sh
atacontrol mode ad0 UDMA66
atacontrol mode ad4 UDMA66
atacontrol mode ad5 UDMA66
atacontrol mode ad6 UDMA66