Some info from WD's site:
How to remove EZ BIOS
1.Boot to the Data Lifeguard Tools disk. Instructions for downloading and extracting this software are available by clicking on the link below.
2. At the main menu, select "EZ-Install" by highlighting it and pressing Enter.
3. Data Lifeguard Tools EZ-Install will start to load, bringing you to a Welcome Screen; press Enter to continue.
4. The License Agreement will now be shown; press Enter to continue.
5. You should now be at the main menu of EZ-Install.
6. At the main menu of EZ-Install, highlight "Advanced Options" and press Enter.
7. From the Advanced Options menu, highlight "EZ-BIOS Setup" and press Enter.
Note:A message may appear informing you that EZ-BIOS is needed to control your drive and offer to install it. Answer "No" if it asks this.
8. A box will appear showing you the drives that you have installed in your system, highlight the correct drive and press Enter to select it.
9. Once the correct drive is selected, another menu will appear, and an option labeled "Controlled by EZ-BIOS" will be listed. To the right of this option it will say "Enabled". Highlight that line and press Enter to change it to "Disabled".
10. Highlight "Save the changes and exit" and press Enter.
Note: At this point EZ-BIOS is only disabled and has not been completely uninstalled. Remove the Data Lifeguard Tools disk and reboot into Windows. The drive should now appear under My Computer and you should be able to access your files. If so follow the steps below to now Uninstall EZ-BIOS from your hard drive.
11. Reboot to the Data Lifeguard Tools disk and navigate to the EZ-BIOS Setup menu by following steps 1-8 you performed earlier.
12. After selecting the correct drive, the option "Uninstall EZ-BIOS" will now be shown. Highlight this option and press Enter to uninstall.
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This may not apply at all, just a possiblity.