DVD-RW drive
Predrag Punosevac
punosevac at math.arizona.edu
Sun Sep 9 16:09:24 PDT 2007
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
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