日志内容如下：
message：
sense key：medium error [current]
add. sense:unable to recover table-of-contents
kernel:
sr0: CDROM (ioctl) error, command: Test Unit Ready 00 00 00 00 00 00
sr: Sense Key : Medium Error [current]
sr: Add. Sense: Unable to recover table-of-contents
不停地在日志里刷 很烦人的 请各位高手帮忙 ！
