Toshiba 4000 User Guide

108

Power Management
Powering down the computer

Factors to consider when choosing Shut down:

No power is used while the computer is shut down. This is the 
most efficient mode if you will be away from your computer 
for an extended time.

Restarting from Shut down uses the most time and battery 
power.

When starting up again, the system does not automatically 
open the programs and files you were previously using.

The Hibernation command powers off the computer, but it first 
saves the current mode of the computer to the hard disk. Since 
Hibernation does not require power to maintain the saved 
information, the system settings are retained indefinitely. 
Restoring information from the hard disk takes longer than 
restoring it from memory. When you start up again, the computer 
runs a self-test, loads the operating system, and then returns to the 
mode in which you left it.

Factors to consider when choosing Hibernation:

While in Hibernation mode, the computer uses no battery 
power.

Because the state of the system is held on the hard disk, no 
data is lost if the battery discharges while the computer is in 
Hibernation mode.

When starting up again, this choice uses less time and battery 
power than the Shut down option. But it uses a little more time 
and battery power to start up than the Standby option, because 
information is being retrieved from the hard disk instead of 
from memory.

On restarting, the computer returns to the mode in which you 
left it, and opens all the programs and files you were using.