User’s Manual 1-16
Introduction
TOSHIBA HDD 
Protection
This feature uses the acceleration sensor built in 
the computer to detect vibration and shocks, and 
automatically moves the hard disk drive’s 
read/write head to a safe position in order to 
reduce the risk of damage that could be caused 
by head-to-disk contact. Refer to the Using the 
Hard Disk Drive (HDD) Protection section in 
Chapter 4, Operating Basics for details.
The TOSHIBA HDD Protection function does not guarantee that the hard 
disk drive will not be damaged.
Hibernation Mode This feature lets you turn off the power to the 
computer without exiting from your software. The 
contents of main memory are automatically 
saved to the hard disk drive so that when you 
next turn the power on again, you can continue 
working right where you left off. Refer to the 
Turning off the power section in Chapter 3, 
Getting Started, for more details.
Sleep Mode If you have to interrupt your work, you can use 
this feature to allow you to turn off power to the 
computer without exiting from your software. Data 
is maintained in the computer's main memory so 
that when you next turn on the power, you can 
continue working right where you left off.
Optical Drive Auto 
Lock
This function automatically locks the optical disc 
drive eject button if the computer detects any 
vibration or other shocks while running on the 
battery. This function prevents the disc tray from 
opening even if the eject button is pushed 
unexpectedly. For information on using this 
feature, please refer to the Optical Drive Auto 
Lock section in Chapter 4, Operating Basics.