Date: Thu, 9 Dec 2004 12:47:10 +0100 From: Arjan Van Leeuwen <avleeuwen@gmail.com> To: Rob <spamrefuse@yahoo.com> Cc: freebsd-stable@freebsd.org Subject: Re: hw.ata.ata_dma="0": can I do this during bootup at the loader prompt? Message-ID: <d86b487304120903475c4e6cc0@mail.gmail.com> In-Reply-To: <41B7E193.4090807@yahoo.com> References: <41B7E193.4090807@yahoo.com>
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On Thu, 09 Dec 2004 14:24:35 +0900, Rob <spamrefuse@yahoo.com> wrote: > > Hi, > > In /boot/loader.conf, I have > hw.ata.ata_dma="0" > to prevent a WRITE_DMA failure crash at bootup. > Unfortunately, this forces my UDMA100 harddisk to operate > at PIO4 speed. > > There are patches flying around on this mailing list that might > solve the problem. I'm very keen on testing such patches, but I > should remove the line in loader.conf. However, if the patch does > not work, I end up with an unbootable disk. > > It would be nice if I can set hw.ata.ata_dma="0" at the loader > prompt during bootup, so that the system at least will boot from > harddisk. Is that possible? > I'm not sure if I understand what you want, but you can use eg 'atacontrol mode <channel> udma33 udma33' to set your hard drive to UDMA-33 after the system has booted. Arjan
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