[Cialug] OT: New Macintosh Models

[Zachary Kotlarek]

On Jun 25, 2009, at 3:45 PM, Nathan C. Smith wrote:

> The new Macs are supposed to have sealed batteries.  Does anyone  
> know if they have a reset button for those instances where you need  
> to unplug and remove the battery to force some kind of reset?



The main power button has a hardware watchdog -- if you hold it down  
long enough the machine will power off, no matter what state the  
software/CPU is in. It's not as fail-safe as pulling the battery, but  
it's only marginally more complicated than a dedicated-function reset  
button, and therefore similarly reliable; it will work as long as the  
PMU hardware and button itself are functional.

The iPhone has a similar reset mechanism to the iPod, where you hold  
down a unique key combination for a while to reset, again without  
relying on the OS or CPU.

--

That being said, you can get the battery out by removing a handful of  
phillips screws for the case bottom and a pair of tri-wings for the  
battery itself, without so much as even unplugging other connectors.  
Not something I'd want to have have to do on the road by any means,  
but other than needing a tri-wing driver it's not exactly  
computational chemistry either.

	Zach

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