Sony PCG-SRX99 - Manual (Page 28)

Hibernate mode
In the Hibernate mode, the state of the system is saved on the hard disk drive and power is turned off. The power indicator
is off in this mode.
To activate Hibernate mode
1. To activate Hibernate mode, press the key combination Fn+F12, or press the power button and release it
immediately. The "Save to Disk Manager" screen appears and the computer enters Hibernate mode.
Do not move the computer until its power indicator turns off.
2. Press the power button to return to normal mode.
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