I have an old MacBook running OS 10.6.8 which I want to recycle, but its internal SuperDrive doesn't work, so I can't use the install disk to do it.  I tried plugging in Apple's external USB SuperDrive which I bought when I upgraded to a MacBook Pro which has no internal SuperDrive, but the external SuperDrive doesn't accept the disc; it's as if the old MacBook doesn't recognize the external drive.  I'm thus at a loss as to how to proceed to wipe the hard disk.  Any suggestions?

 

Thanks,

Scott