Yeah, one key distinction between apple's pro and consumer laptop line. You would not want to mistake the ibook for a PowerBook by seeing it spanning displays... What a joke on Apple's part they should find another feature to distinguish by, but since the machines are so similar they have to resort to turning of features of hardware via software. So how much are they overcharging for the PowerBook G4 12", because of differences like this ? That is something that should not be disabled on apples part, but oh well that why there are hacks.... But modifying firmware is a perfectly vailid reason for voiding a hardware warrantee.Even if if it is just modifying software. That software in turn could mess up the hard hardware if done incorrectly because that software controls the hardware. Daniel J. Brieck Jr. On Oct 3, 2005, at 4:43 PM, Philip J Robar wrote: > > On Oct 3, 2005, at 11:16 AM, William Wiseman wrote: > > >> One one I'm aware of is Screen Spanning Doctor and it rewrites >> part of the Firmware, which voids the warranty. I remember reading >> about someone having trouble with Apple on a non-video related >> warranty repair after Apple discovered this hack was installed. >> > > It doesn't "rewrite" your firmware. It just changes a firmware > setting by storing the new value in NVRAM (non-volatile). All you > have to do is change the setting back if you need to get warranty > support and no one will know the difference. > > Phil > -- > We cannot defend freedom abroad by deserting it at home. -- Edward > R. Murrow >