Holy cow, I wrote a book!
Windows Vista displays a big scary dialog when
the hard drive's on-board circuitry reports that the hardware
is starting to fail.
Yet if you go to the Disk Management snap-in,
it reports that the drive is Healthy.
What's up with that?
The Disk Management snap-in is interested in the logical structure of
Is the partition table consistent?
Is there enough information in the volume to allow the operating system
to mount it?
It doesn't know about the drive's physical condition.
In other words,
"As far as the Disk Management snap-in is concerned, the drive is healthy."
Similarly, your car's on-board GPS may tell you that you are on track
for a 6pm arrival at your destination,
unaware that you have an oil leak that is going to force you to the
side of the road sooner or later.
All the GPS cares about is that the car is travelling along the correct road.
[Raymond is currently away; this message was pre-recorded.]