关于挂载刻录机到/mnt目录下的问题

storm the front

已用"hdg=ide-scsi"使系统识别，开机显示：
hdg: attached ide-scsi driver.
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
  Vendor: SONY      Model: CD-RW  CRX230E    Rev: QYS1
  Type:   CD-ROM                             ANSI SCSI revision: 02
Attached scsi CD-ROM sr0 at scsi0, channel 0, id 0, lun 0
sr0: scsi3-mmc drive: 97x/52x writer cd/rw xa/form2 cdda tray
用cdrecord -scanbus也能认出
但是却无法挂载到/mnt
root@darkstar:/mnt# mount -t  iso9660 /dev/sr0 /mnt/cdrw
mount: block device /dev/sr0 is write-protected, mounting read-only
mount: 找不到介质
root@darkstar:/mnt# mount -t  iso9660 /dev/scd0 /mnt/cdrw
mount: block device /dev/scd0 is write-protected, mounting read-only
mount: 找不到介质
root@darkstar:/mnt# mount -t  iso9660 /dev/hdg /mnt/cdrw
mount: wrong fs type, bad option, bad superblock on /dev/hdg,
       or too many mounted file systems
       (could this be the IDE device where you in fact use
       ide-scsi so that sr0 or sda or so is needed?)


:help
ps:本人除刻录机外还挂载了一个光驱，不知Slackware是否支持同时挂载两个光驱设备？还有我的主板有4个IDE接口，光驱为hdb,cdrw为hdg,不知是否和这也有关系?还是我的命令有错误？请指教。