sh-2.05b# kextunload /System/Library/Extensions/ApplePS2Controller.kext/Contents/PlugIns/ApplePS2Keyboard.kext
kextunload: /System/Library/Extensions/ApplePS2Controller.kext/Contents/PlugIns/ApplePS2Keyboard.kext: no such bundle file exists
can't add kext (file access/permissions).
sh-2.05b# 
sh-2.05b# kextload /System/Library/Extensions/ApplePS2Controller.kext/Contents/PlugIns/ApplePS2Keyboard.kext
kextload: /System/Library/Extensions/ApplePS2Controller.kext/Contents/PlugIns/ApplePS2Keyboard.kext: no such bundle file exists
can't add kernel extension /System/Library/Extensions/ApplePS2Controller.kext/Contents/PlugIns/ApplePS2Keyboard.kext (file access/permissions) (run kextload on this kext with -t for diagnostic output)