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Re: Is cdrecord broken?

On Thu, Sep 15, 2005 at 12:27:59AM -0300, Henrique de Moraes Holschuh wrote:
> On Wed, 14 Sep 2005, Roberto C. Sanchez wrote:
> > Any ideas?
> 1. Switch to 2.6.13.
Not something I want to do, as I would rather stick with what is in
Sarge.  I will give it a shot :-|

> 2. Use the ATAPI interface (not scsi emulation).
Already doing that.

> 3. Use a backport of sid's cdrecord which has some important fixes.
OK.  I was not aware of this.

> That should do it.  Oh, and make triple sure you have ATAPI DMA
> capabilities enabled or you WILL get buffer underruns at high speeds
> (usually, hdparm -d1 -u1 <device> is enough to force it enabled).
This is already set, as it also has a major and noticable impact on read
performance if it is not set :-)

> 2.6.13 should be able to do it with pretty much all common south bridges
> capable of it (which is just about all new ones, AFAIK), with the notable
> exeption of ATAPI PATA devices behind a PATA-SATA bridge in a SATA channel
> (like the one in my Thinkpad T43 :-( ).  Some PCI IDE controllers are NOT
> capable of ATAPI DMA, but these are relatively old, and unlikely to be found
> on any new motherboards or PCI expansion cards.
OK.  My motherboard is an nForce2 board, so I am fairly certain that it
is capable.

Roberto C. Sanchez

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