Currently Being ModeratedApr 11, 2013 12:59 AM (in response to nathannitz)
Why would u want to disable the internal hard drive? Has it gone bad? Do you hear any clicking sounds? These maybe signs the drive is going bad. To my knowledge there is no Open Firmware command to disable any hard drive.. you can only unmount devices.. to totally disable it you would need to open the laptop up and unplug the 40 pin IDE cable.