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MY BOOK ESSENTIAL 
USER MANUAL
CHECKING DRIVE HEALTH – 41
Checking Drive Health
The data files on your My Book drive are important to you. The WD SmartWare software 
has several built-in diagnostic tools to help make sure that your drive is performing well. 
Run one of the following tests if you are concerned that your drive is not operating 
properly:
The best time to run the drive diagnostics and status checks is on a regular basis, before 
you encounter any problems with your drive. And, because they are so fast, running the 
quick S.M.A.R.T. status check and the quick drive test provides a high level of assurance 
with minimal inconvenience.
Run all three whenever you encounter disk error conditions when backing up or 
retrieving files.
To run drive diagnostics and status checks: 
1.  
On the Drive Settings screen (see Figure 17 on page 28), click Diagnostics to display 
the Run Diagnostics dialog:
Diagnostic Tool
Description
Quick S.M.A.R.T. Status Check
S.M.A.R.T. is a failure-prediction function that continuously 
monitors key internal performance attributes of the drive. A 
detected increase in drive temperature, noise, or read/write 
errors, for example, can provide an indication that the drive 
might be approaching a serious failure condition. With 
advanced warning, you could take precautionary measures, 
like moving your data to another drive, before a failure 
occurs.
The result of a quick S.M.A.R.T. status check is a pass or fail 
evaluation of the drive's condition.
Quick Drive Test
Your My Book drive has a built-in Data Lifeguard diagnostic 
utility that tests the drive for error conditions. The quick 
drive test checks the drive for major performance problems.
The result of a quick drive test is a pass or fail evaluation of 
the drive's condition.
Complete Drive Test
The most comprehensive drive diagnostic is the complete 
drive test. It methodically tests each and every sector for 
error conditions, and inserts bad-sector markers as 
required.