You can disable hardware components in OS X by deleting (or renaming) the kernel extension directory that contains the driver for that piece of hardware.
Kernel extensions are stored in subdirectories in
/System/Library/Extensions.
In some cases, there is more than one driver involved, so you need to delete or rename multiple directories.
Drivers for AirPort wireless:
- AppleAirPort.kext
- AppleAirPort2.kext
- AppleAirPortFW.kext
Drivers for Bluetooth wireless:
- IOBluetoothFamily.kext
- IOBluetoothHIDDriver.kext
Drivers for external mass storage (external hard disks or USB keys):
- IOUSBMassStorageClass.kext
- IOFireWireSerialBusProtocolTransport.kext
You may have delete or rename the directories again after a system update because an update may restore the drivers. After removing the drivers, reboot to make sure the hardware is disabled.
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