CD Burning problem

Fabian Keil freebsd-listen at
Tue Sep 20 05:37:41 PDT 2005

Beecher Rintoul <akbeech at> wrote:

> On Monday 19 September 2005 11:40 pm, Peter Jeremy wrote:
> > On Mon, 2005-Sep-19 13:48:26 -0800, Beecher Rintoul wrote:
> > >Sorry for the cross post, I meant to send this to current in the first
> > > place. Since upgrading a couple of times, I'm now seeing this error when
> > > burning to a CD/RW:
> >
> > We need a bit more background.  What is your ATA controller and how are
> > the disks/CD's connected to the channels?  Can you post the extracts
> > from a dmesg.
> >
> > I've seen the "swap_pager: indefinite wait" when burning data to a DVD on
> > the same channel as the swap disk.
> stargate# dmesg

> [...]

> ad0: DMA limited to UDMA33, controller found non-ATA66 cable
> ad0: 19092MB <WDC WD200BB-00DEA0 05.03E05> at ata0-master UDMA33
> ad2: DMA limited to UDMA33, controller found non-ATA66 cable
> ad2: 16231MB <WDC WD170AA 29.05T29> at ata1-master UDMA33
> acd0: CDRW <LG CD-RW CED-8042B/1.07> at ata1-slave PIO4
> cd0 at ata1 bus 0 target 1 lun 0
> cd0: <LG CD-RW CED-8042B 1.07> Removable CD-ROM SCSI-0 device
> cd0: 16.000MB/s transfers
> cd0: Attempt to query device size failed: NOT READY, Medium not present
> Trying to mount root from ufs:/dev/ad0s1a

You should enable DMA (hw.ata.atapi_dma="1" in /boot/loader.conf)

I don't know if it fixes your problem, but it won't hurt either.

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