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Mac Forum / General / Portable Macs / June 2006MacBook Pro does not like planes?
Hi, I know that it sounds crazy, but my MacBook Pro does not seem to like planes... Since I bought it, I have tried four times to use it on an airplane. In every case, it somehow seems to loose connection to the internal hard disk. If I put the machine to sleep before boarding and then wake it up during the flight, it seems to work fine but as soon as a process attempts to access the disk, that process just blocks. This of course blocks the whole system rather quickly and forces a hard reboot. The reboot then invariably fails (it shows a gray screen for several minutes and finally a folder with a flashing question mark sign). If I shut the computer down before the flight and then turn it on in the air, I immediately get to the gray screen followed a couple of minutes later by the flashing question mark sign. The reason why I believe that the connection to the hard disk is lost is that attempts to wake up / boot the computer on the plane don't leave any trace in the syslogs... Did anyone else ever see something like that or did I somehow end up with the only laptop in the world that has a bad contact triggered by a slight lowering of air pressure? Martin > Did anyone else ever see something like that or did I somehow end up > with the only laptop in the world that has a bad contact triggered by a > slight lowering of air pressure? Could be. Take it to an Apple store and tell them about it.  SignatureIs this the right room for an argument? > Hi, I know that it sounds crazy, but my MacBook Pro does not seem to > like planes... Since I bought it, I have tried four times to use it on [quoted text clipped - 19 lines] > > Martin Not a swollen battery issue perhaps? Nigel Australia > Hi, I know that it sounds crazy, but my MacBook Pro does not seem to > like planes... Since I bought it, I have tried four times to use it on [quoted text clipped - 17 lines] > with the only laptop in the world that has a bad contact triggered by a > slight lowering of air pressure? Your MacBook Pro may be defective. Contact Apple to arrange for it to be serviced and do not wait for the warranty to expire. The problem you described may be a sign that something else is going wrong. >>Hi, I know that it sounds crazy, but my MacBook Pro does not seem to >>like planes... Since I bought it, I have tried four times to use it on [quoted text clipped - 19 lines] > > Your MacBook Pro may be defective. I surely hope so ;) > Your MacBook Pro may be defective. Contact Apple to arrange for it to be > serviced and do not wait for the warranty to expire. The problem you > described may be a sign that something else is going wrong. My understanding is that Apple will not repair a problem that they cannot reproduce. It would seem unlikely that they would book an airplane flight to test you computer! > > Your MacBook Pro may be defective. Contact Apple to arrange for it to be > > serviced and do not wait for the warranty to expire. The problem you [quoted text clipped - 3 lines] > cannot reproduce. It would seem unlikely that they would book an > airplane flight to test you computer! I called them yesterday and not too much came out of it. Obviously the technician was rather puzzled at the description of the problem ;-) He promised to forward it further up the chain and to recontact me. I haven't heard anything back so far... Martin > > > Your MacBook Pro may be defective. Contact Apple to arrange for it to be > > > serviced and do not wait for the warranty to expire. The problem you [quoted text clipped - 12 lines] > > Martin I think this may be an air pressure problem. Airplanes usually are pressurized to the equivalent of 7000 feet. Hard drives require air pressure to work. Its aerodynamics that allows the heads to "fly" over the disk platters. As I understand it, hard drives generally are rated to work up to about 10,000 feet because above that, the air pressure is insufficient to let the heads "fly". This should mean that the drive will work on an airplane. It may be that your drive is "special" but if that's the case, I suspect its going to be hard to convince Apple of this. rus > Hard drives require air pressure to work. Its aerodynamics that allows > the heads to "fly" over the disk platters. As I understand it, hard > drives generally are rated to work up to about 10,000 feet because above > that, the air pressure is insufficient to let the heads "fly". Thanks, I didn't know that. So that would make a case for simply swapping out the internal harddrive if Apple can't be convinced of doing anything about it... Martin |
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