Using Power Management
Hibernation Mode
Note:
With a base memory of 8MB, it takes
approximately 10 seconds to enter
hibernation mode and 18 seconds to
resume normal operation. (The time
to enter or exit hibernation mode
depends on the computer memory
size.)
In hibernation mode, all tasks are stopped and memory data and the
current status of the computer are stored on the hard disk drive;
then power is turned off
. No battery power is used. When power is
turned on again, the computer automatically restores the tasks and
resumes normal operation.
To enter hibernation mode, press Fn+F12. To return to normal
operation, turn on the power switch.
Before you can use hibernation mode, you must first create a
hibernation file. See the next section.
Creating the Hibernation File
Attention:
The hibernation file must not be
created in a compressed data area
of the hard disk.
When installing an operating system or installing additional computer
memory, you must create a hibernation file on the hard disk drive to
use the hibernation mode.
The size of the hibernation file will be greater than total memory.
For example, if base memory is 16MB and you have installed an
optional 8MB memory module (DIMM), the hibernation file is 25MB:
(16MB + 8MB) + 1MB = 25MB
Note:
You can create a hibernation file on
the hard disk drive in the main hard
disk drive bay.
See the ThinkPad Features program online help or PS2 command
help on how to create the hibernation file.
Considerations for Hibernation Mode
Consider the following before using hibernation mode:
Using a docking station or a particular PC Card can disable
hibernation mode.
Do not run any tasks while the hibernation file is being created.
The computer uses battery power to enter hibernation mode.
Therefore, it reserves some battery power when it is set to enter
hibernation mode when a low-battery condition occurs.
98
IBM ThinkPad 760E, 760ED, or 760EL User's Guide
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