Do the previous instructions not cause a problem with kext signing in the more recent versions of OS X e.g. 10.10.3 where Apple's restrictions mean that any unauthorised kernel edits are blocked and the system will inevitably fail to boot? i.e. is the 'hack' still current?
Sorry, last poster / anon but without this info it would be possible to follow these instructions and screw up the system for the sake of a Superdrive.