Western Digital Data Lifeguard Diagnostic Utility, User Manual, Page: 10 / 21

DATA LIFEGUARD DIAGNOSTICS (DLGDIAG)
DLGDIAG FOR WINDOWS – 7
USER MANUAL
3. Extended Test begins. The test may take several hours to complete depending on the size
of the hard drive tested. When the test is complete, click Close .
Write Zeros
Write Zeros writes zeros to the drive with the option to perform a quick erase or full erase.
Selecting the write zeros option the file system and all data on the drive being tested.
1. Click Extended Test , then click Start .
2. If you are sure that you want to write zeros to the drive, click Yes .
3. Select Quick Erase or Full Erase, then click OK .
4. Write Zeros begins. When Write Zeros is complete, click Close .
CAUTION: Back up all data on your hard drive(s). You will erase all data if the
Write Zeros option is invoked.