Lenovo ThinkPad 560 Thinkpad 560 User's Guide - Page 93

Considerations for Hibernation Mode, Do not add or remove memory during hibernation mode.

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Using Power Management Considerations for Hibernation Mode Consider the following before using hibernation mode: Do not run any tasks while the hibernation file is being created. Create the hibernation file only on the hard disk drive installed in the computer. The hibernation file is hidden and cannot be accessed. 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. This can cause the battery operating time to be shorter than the time publicly stated. Do not add or remove memory during hibernation mode. If you do, the computer resumes from hibernation mode without recognizing the changed memory size. To ensure that the computer recognizes the correct memory size, shut down; then restart your operating system. Chapter 4. Using Battery Power 75

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Using Power Management
Considerations for Hibernation Mode
Consider the following before using hibernation mode:
Do not run any tasks while the hibernation file is being created.
Create the hibernation file only on the hard disk drive installed in
the computer.
The hibernation file is hidden and cannot be
accessed.
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.
This can
cause the battery operating time to be shorter than the time
publicly stated.
Do not add or remove memory during hibernation mode.
If you
do, the computer resumes from hibernation mode without
recognizing the changed memory size.
To ensure that the
computer recognizes the correct memory size, shut down; then
restart your operating system.
Chapter 4.
Using Battery Power
75