
Using DiskWarrior’s Hardware Monitoring Chapter 2: Using DiskWarrior 46
About DiskWarrior’s Hardware Monitoring
DiskWarrior’s hardware monitoring capability uses internal diagnostic routines built into hard
drive devices by their manufacturers to detect and track how often a drive exceeds its operating
tolerances. The more frequently the drive exceeds these tolerances, the more likely the drive is
to experience hardware malfunction, and the more at risk any data on that drive becomes.
The hardware monitoring can be configured to run on your hard drives automatically, or you
may choose to run it manually when you suspect a drive of malfunctioning. By activating the
automatic diagnostic, DiskWarrior will run the internal diagnostic routines built into your hard
drive device as often as you specify. You also choose what action DiskWarrior should take in the
event it does detect the potential for hardware failure.
Most hard drives manufactured in 1996 or later have internal diagnostic routines that can
monitor the drive and detect the deterioration of the drive mechanism. If a hard drive device was
manufactured before 1996, its internal diagnostics may report an error only when the drive is
completely non-functional. In these cases, the drive will have to be sent to a recovery facility to
retrieve the data.
Note: DiskWarrior’s hardware monitoring relies upon internal diagnostic routines built
into hard drives by their manufacturers. Different drive manufacturers may have different
tolerances in their tests.
Caution: In most hard drives, the internal diagnostic routines are inactive by default, and
will remain inactive until DiskWarrior’s hardware monitoring is activated for the first time
on the hard drive. Since the internal diagnostic routines measure changes in the drive over
time, to get the maximum benefit from the hardware monitoring, use DiskWarrior to test
your drive(s) as soon as possible.
Manual Diagnostics
If you wish to run the hardware monitoring manually, open the DiskWarrior application and
click the hardware icon. Choose the hard disk you wish to test from the pop-up menu. The lower
portion of the window will indicate the volumes and type of hard disk in the pop-up menu. Click
the Test Device button to test the disk.
Note: Some hard drives will generate a sound when the internal diagnostic is run. This
sound is normal and not an indicator of mechanical malfunction.
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