DVD-RW doesn't write

[Wilko Bulte]

Quoting Jerahmy Pocott, who wrote on Tue, Jun 10, 2008 at 03:58:37PM +1000 ..
> Hello all,
> 
> I'v been trying to get this dvd burner to burn, but there seems to be  
> something wrong with the driver for the controller or the drive..
> 
> 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
> 
> 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
> 
> The message that the controller found a non-ata66 cable is an error,  
> the cable is most certainly ata66 compatible and I'v switched it out  
> to make sure it wasn't faulty..
> 
> The drive is able to mount and read cds/dvds fine, but on trying to  
> use burncd it says:
> acd0: FAILURE - READ_TRACK_INFO ILLEGAL REQUEST asc=0x24 ascq=0x00
> 
> Any further attempts produce the above message with no delay to read  
> from the drive, resetting the ata0 channel makes it check the drive  
> again before producing the message.
> 
> On loading atapicam module it says:
> acd0: FAILURE - INQUIRY ILLEGAL REQUEST asc=0x24 ascq=0x00
> 
> So I wasn't able to try cdrecord with it..
> 
> I also dropped it back ti PIO4 mode in case there was a DMA issue, but  
> I had the same results in PIO.
> 
> Any more ideas?

Are you sure the drive hardware is OK?  I recently had this funny drive
that could do everything except write.  Very strange but true.

-- 
Wilko Bulte				wilko at FreeBSD.org