Toshiba Satellite W30T-A - Manual (Page 32)

2. Enable the desired Hibernation Mode settings for When I press the
power button and When I close the lid.
3. Click the Save changes button.
Data save in Hibernation Mode
When you turn off the power in Hibernation Mode, the computer will take a
moment to save the current data in memory to the Hard Disk Drive.
After you turn off the computer, and the content of memory has been saved
to the Hard Disk Drive, turn off the power to any peripheral devices.
Do not turn the computer or devices back on immediately. Wait a moment
to let all capacitors fully discharge.
User's Manual 2-15