From owner-freebsd-questions@FreeBSD.ORG  Wed Jun  4 14:37:36 2008
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From: Jerahmy Pocott <quakenet1@optusnet.com.au>
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Date: Wed, 4 Jun 2008 19:13:36 +1000
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Subject: DVD Writer problems
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Hello,

I'v been having problems getting this DVD drive working at all, I'm  
running on 6.3 p1..

On boot it is detected as:
acd0: DMA limited to UDMA33, controller found non-ATA66 cable
acd0: DVDR <ATAPI DVD A DH20A4P/9P57> at ata0-master UDMA33

Which is the first sign of trouble, it is connected by an ATA66  
capable cable and I'v tried swapping over the cable to rule out a  
faulty cable and the message is the same.

It is connected to:
atapci0: <Intel ICH6 UDMA100 controller> port  
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xffa0-0xffaf irq 16 at device  
31.1 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0


When trying to use burncd on it, the drives light flashes for a while  
then after a delay I get:
acd0: FAILURE - READ_TRACK_INFO ILLEGAL REQUEST asc=0x24 ascq=0x00

On the console and any further attempt to use the drive results in  
that message being repeated without any delay, also trying to use the  
atapiscsi device results in a similar message:
acd0: FAILURE - INQUIRY ILLEGAL REQUEST asc=0x24 ascq=0x00


Any thoughts on what problem here is? It seems that the controller  
isn't working properly with it?

Cheers,
J.