DVD-RW drive

Predrag Punosevac punosevac at math.arizona.edu
Sun Sep 9 17:38:09 PDT 2007

Absolute success!!! Media is completely readable. I still cannot get 
Gnome rw tools to behave and K3b is complaining about few outdated 
packages which I am afraid to update since probably the Gnome depends on 
it but who cares. Command line rules!

Thanks a lot body one more time!
Predrag Punosevac

Martin Tournoij wrote:
> On Sun 09 Sep 2007 16:09, Predrag Punosevac wrote:
>> I have a very strange problem with my DVD-RW drive. Namely the drive is for some reason recognized as read only
>> acd0: DVDR <LITE-ON DVDRW LH-18A1P/GL0C> at ata0-slave UDMA66
>> I am running FreeBSD 6.2 stable with generic kernel (I didn't compile nor install my own kernel)
>> so the following lines are present in my GENERIC
>> [pedja@ /usr/src/sys/i386/conf]$ more GENERIC
>> # ATA and ATAPI devices
>> device          ata
>> device          atadisk         # ATA disk drives
>> device          ataraid         # ATA RAID drives
>> device          atapicd         # ATAPI CDROM drives
>> device          atapifd         # ATAPI floppy drives
>> device          atapist         # ATAPI tape drives
>> options         ATA_STATIC_ID   # Static device numbering
>> # SCSI peripherals
>> device          scbus           # SCSI bus (required for SCSI)
>> device          ch              # SCSI media changers
>> device          da              # Direct Access (disks)
>> device          sa              # Sequential Access (tape etc)
>> device          cd              # CD
>> device          pass            # Passthrough device (direct SCSI access)
>> device          ses             # SCSI Environmental Services (and SAF-TE)
>> I also edited my load.conf file with
>> hw.ata.ata_dma="1"
>> hw.ata.atapi_dma="1"
>> I altered the permissions devfs.conf and fstab file so that I can read and write but that is not even important since I can not
>> write anything even from the command line
>> I also get
>> [pedja@ /usr/home/Pedja]$ dvd+rw-mediainfo /dev/acd0
>> /dev/acd0: unable to open: Inappropriate ioctl for device
>> [pedja@ /usr/home/Pedja]$ dvd+rw-mediainfo /dev/cd0
>> /dev/cd0: unable to open: Inappropriate ioctl for device
>> Whole behavior is even more strange since the optical drive was working flawlessly on PC-BSD 1.3 which is FreeBSD 6.1 stable.
>> Any suggestions.
>> Thank you so much
> You need to use ATAPICAM if you want to use ATA cd-writers, see the
> FreeBSD handbook:
> http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/creating-cds.html#ATAPICAM
> A small addition to the handbook:
> You don't need to reboot your machine, the command:
> $ kldload atapicam
> Will load the module at runtime.
> Use /dev/cd0 instead of /dev/acd0 for all writing purposes.
> Maybe PCBSD does this automagiclly? Can't comment on that since I
> don't use PCBSD.

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