IBM ThinkPad T20, Hardware Maintenance Manual

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Related service information
Hibernation mode
Note for Windows NT
If you are using Windows NT in the default format,
NTFS, you cannot create a hibernation file. If you
want to use hibernation mode, you will need to
reinstall Windows NT with FAT format.
Note for OS/2
If you are using OS/2 in the default format, HPFS, you
cannot create a hibernation file. If you want to use
hibernation mode, you will need to reinstall OS/2 with
FAT format.
In hibernation mode, the following occurs:
Ÿ
The system status, RAM, VRAM, and setup data are
stored on the hard-disk.
Ÿ
The system is powered off.
Any one of the following events causes the computer to
enter hibernation mode:
Ÿ
The Fn
+
F12 keys are pressed.
Ÿ
The power switch is turned off and the mode is set to
Power switch mode [Hibernation].
Ÿ
The timer conditions are satisfied in suspend mode
(for operating systems other than Windows 98).
Ÿ
A critically low battery condition occurs and the mode
is set to Hibernate when battery becomes low.
When the power is turned on, the computer leaves
hibernation mode and resumes operation. The hibernation
file in the boot record on the hard-disk drive is read, and
system status is restored from the hard-disk drive.
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.
3. If the computer enters the hibernation mode
while it is docked to the docking station, do not
undock it from the docking station before
resuming normal operation. If you do undock it,
then if you try to resume normal operation, you
will get an error message, and you will have to
restart the system.
General descriptions
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