major CD errors when installing 7.0 (only 7.0)!

[Joachim Rosenfeld]

On Wed, May 14, 2008 at 5:27 AM, Julien Cigar <jcigar at ulb.ac.be> wrote:
> > But when I installed via the 7.0 disk 1, I received CD errors when I
> > got to the point where it started copying the base distribution off
> > the disk.
> >
> > When I booted off the same CD again, I saw something similar to the following:
> >
> > acd0: FAILURE - READ_BIG ILLEGAL REQUEST asc=... ascq=...
>
> I have this problem too ... the only solution I've found is to disable
> DMA (hw.ata.atapi_dma). It partially resolve the problem, but it's still
> impossible to burn and performance are very poor (~ 2MB/s), etc ...

How do I do this from the CD itself? "set hw.ata.atapi_dma=0" in the
CD's  boot loader menu seemed to do nothing.

Joe