IBM THINKPAD S05L-1270-01 - Manual (Page 443)

Computer also exits suspend mode when timer conditions
are satisfied for entering hibernation mode.
Hibernation Mode
Note: Before using the hibernation mode, the hibernation
file is needed.
In hibernation mode, the following occurs:
The system status, RAM, VRAM, and setup data are
stored on the hard disk.
The system is powered off.
Events that cause the computer to enter hibernation mode:
Hibernation mode is requested by the Fn key
(Fn
+ F12).
Timer conditions are satisfied in suspend mode.
A critically low battery condition occurs.
The PS2 HIBernation command is set in the
ThinkPad Configuration program.
The computer exits hibernation mode and resumes
operation when the power-on switch is turned on.
When power is turned on, the hibernation history in the
boot record on the hard disk is recognized and system
status is restored from the hard disk to resume operation.
Notes:
1. In the ThinkPad Configuration program, the
computer can be set to “suspend hibernate while
docked.”
2. The computer cannot enter hibernation mode
when:
It is powered with ac power and a
communication PC Card is used.
It is attached to a Dock I.
ThinkPad 765D (9546), 765L (9547) 431