Hitchhiker's Guide to Openbsd

13.10 - How do I burn CDs and DVDs?
13.10.1 - Introduction and basic setup
You should first make sure your CD/DVD writer has been recognized and configured by the kernel. 
Most SCSI devices are supported. IDE/ATAPI and USB devices are supported through SCSI emulation. 
You will quickly find your device in a 
dmesg(8)
 output. Just look for lines beginning with "cd", for 
example 
cd0 at scsibus0 targ 0 lun 0: 2826> SCSI0 5/cdrom removable
cd1 at scsibus1 targ 4 lun 0:
1.04> SCSI2 5/cdrom removable
But 
cdrecord -scanbus
 does not work!
Yes. OpenBSD uses a different device namespace than the OS for which the cdrecord utility was 
written. All configured devices should be in the dmesg output, as mentioned above. The information you 
need is right there. 
Error: 
mount_cd9660: /dev/cd2c on /mnt/cdrom: No such file or directory
By default, the OpenBSD installer creates only two cd device nodes, 
cd0
and 
cd1
. To start using your 
cd2
device, you must create the necessary device nodes for it. The recommended way to do that is using 
the 
MAKEDEV(8)
(select your specific platform) script: 
# cd /dev
# ./MAKEDEV cd2
http://www.openbsd.org/faq/faq13.html (15 of 25)9/4/2011 10:02:21 AM

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13 - Multimedia
In what follows, we will mostly be accessing the CD/DVD writer through the raw character device, not 
the block device. 
Checking CD/DVD writer operation
It is recommended to check whether your CD/DVD writer is working correctly. In this example, I'll be 
using this USB 2.0 DVD writer: 
cd2 at scsibus2 targ 1 lun 0: GS0C> SCSI0 5/cdrom removable
Try to use it by mounting an existing CD/DVD in it. If desired, you could also check the transfer rate 
you are getting when copying files to your hard disk. The 
time(1)
command will be your willing 
assistant. 
If something goes wrong here and you are getting errors during this phase, it is wise to fix the problem 
and not to start writing a CD/DVD yet.