描述：
1.从ports安装 k3b
2.启动 k3b, Settings -> Configure k3b -> Devices -> Readonly Drives & Writer Drives 全部为none
3.点击“Add Devices”，输入/dev/acd0, 系统提示错误信息：Could not find an additional device at /dev/acd0
解决办法：
1.重新编译内核, 确认添加了最后一行
> > 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)
device atapicam
perm acd0 0666
link acd0 cdrom
link acd0 dvd
perm pass0 0666
perm cd0 0666
perm xpt0 0666
devd_enable="YES"
4.以root账号执行
#cd /usr/local/bin
#chmod u+s cdrdao
5.重启以后, k3b就会提示找到了刻录机。
