USB光驱无法挂载？？
USB光驱无法挂载？？
用的是USB光驱，插上后打印信息如下：

# usb 1-1: new high speed USB device using ehci_hcd and address 4
scsi4 : SCSI emulation for USB Mass Storage devices
Hotplug got one USB Hotplug of "Add" from port "1".
  Vendor: HL-DT-ST Model: DVDRAM GSA-T50N Rev: RQ01
  Type: CD-ROM ANSI SCSI revision: 00
sr0: scsi3-mmc drive: 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray
Uniform CD-ROM driver Revision: 3.20
Attached scsi generic sg0 at scsi4, channel 0, id 0, lun 0, type 5
Hotplug got one USB CDROM Hotplug of "Add" from "sr0"
Hotplug: Mount --move "/mnt/usbmounts/sr0" fail.
file name: /sys/block/sr/part_num 
Error in open part_num...

挂载：/ # mount /dev/cdrom0 /mnt/usbmounts/打印信息如下：
mount: /dev/cdrom0 is write-protected, mounting read-only
mount: /dev/cdrom0 is write-protected, mounting read-only
mount: /dev/cdrom0 is write-protected, mounting read-only
mount: /dev/cdrom0 is write-protected, mounting read-only
yaffs: dev is 11534336 name is "sr0"
yaffs: Attempting MTD mount on 11.0, "sr0"
mount: /dev/cdrom0 is write-protected, mounting read-only
yaffs: dev is 11534336 name is "sr0"
yaffs: Attempting MTD mount on 11.0, "sr0"
mount: /dev/cdrom0 is write-protected, mounting read-only
mount: Mounting /dev/cdrom0 on /mnt/usbmounts/ failed: Invalid argument

希望高手帮忙解决！谢谢

------解决方案--------------------
先fdisk -l
看看那个是你的光驱的设备节点