hw.ata.ata_dma="0": can I do this during bootup at the loader prompt?

[Arjan Van Leeuwen]

On Thu, 9 Dec 2004 19:31:40 +0100, Christian Lackas
<c.lackas at kfa-juelich.de> wrote:
> * Scott Long <scottl at freebsd.org> [041209 15:59]:
> 
> Hello,
> 
> > > 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?
> > Yes, that's possible.  Drop the loader to the prompt and do the following:
> > set hw.ata.ata_dma=0
> > boot
> 
> btw: I have a similar problems, but not with the boot disc, but one of
> my data drives, thus I want ata_dma enabled for the other discs.
> 
> I have to dispatch a
> 
>     atacontrol mode 1 foo UDMA33
> 
> to set this drive (slave on second controller) to UDMA33 (otherwise it
> would use UDMA100). But I have to do it before /etc/rc.d/fsck starts
> accessing the device. Right now I've added above line to the beginning
> of aforesaid script.
> Is there a nicer/better place to tell the kernel (don't like editing the
> rc-scripts).

You can use /etc/rc.early for that. You'll have to create it if it
doesn't yet exist. Put 'atacontrol mode 1 foo UDMA33' in it, and it
should execute that command before mounting the drives.

Best regards,

Arjan

> 
> Best regards
>  Christian
> 
> --
> http://www.lackas.net/
> 
> 
> 
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