On 9/11/2010, at 4:04pm, Alex Schuster wrote: > ... >> I need to mention here that the machine is a laptop which I use >> regularly on train journeys (bumpy ride). The drive has a Seagate >> G-Force Protection™ which is meant to park the head in case of a fall. > > Which probably would not help in the train, unless you drop it there.
Further to Alex's comment: the G-Force Protection™ probably parks the head in the event that the laptop goes weightless (a cheap sensor built into the drive would be quite adequate to detect that), but it probably takes half a second to do so. In the case of up and down jolts I'm not sure that it would detect those the same way - maybe it is indeed clever enough to do so, but would it have time to park the head? aB.