Lock your CD-ROM
> Goto run (Window key + R)
> Type regedit
> Find(Ctrl + F)
>Then type "allocatecdrom"
> Change the value "1" to "0"
>To normal it: Change the value "0" to "1"
> Type regedit
> Find(Ctrl + F)
>Then type "allocatecdrom"
> Change the value "1" to "0"
>To normal it: Change the value "0" to "1"