MY BOOK
USER MANUAL
ABOUT YOUR WD DRIVE – 3
Compatibility can vary, depending on hardware configuration and operating system.
For highest performance and reliability, always install the latest updates and service
pack (SP). For Windows computers, go to the Start menu and select Windows Update.
For Mac computers, go to the Apple menu and select Software Update.
Disk Drive Format
Your My Book drive is preformatted as a single NTFS partition for compatibility with all
updated Windows operating systems. If you want to use the drive with a Mac computer,
see “Reformatting the Drive” on page 54 and “Troubleshooting” on page 69.
Physical Description
As shown in Figure 2, the My Book drive has:
• A power/activity indicator on the front
• The power connector and button, interface port, and a security slot on the back
Power/Activity LED
The power/activity LED shows the drive’s power state and activity as follows:
Figure 2. My Book Drive
LED Appearance Power State/Activity
On steady Idle
Fast flashing, approximately 3 times per second Activity
Slow flashing, approximately every 2.5 seconds System standby
Power/Activity LED
Security Slot
USB 3.0
Power Connector
Power Button
