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A power-off mode that preserves the last state of the computer. Turning the computer on after hibernating eliminates booting the operating system and reloading all the applications and data.

When hibernate is activated, the contents of memory (RAM) are written to storage (hard disk, SSD) and the computer is turned off. When turned back on again, the previous memory state is read from storage, and all applications appear exactly as they did the moment hibernate was triggered.

Hibernate Vs. Sleep Mode
Hibernate is power off, whereas sleep mode is power on with the screen and hard disks turned off. In sleep mode, the RAM chips are constantly refreshed in order to retain their content, and the CPU is placed into a low-power state. Although restoring from hibernate is faster than a cold start, coming out of sleep is immediate. Turning the computer back on from either mode eliminates having to reload all applications and data.

Hybrid Modes
Some laptop computers invoke both modes automatically. When put into sleep mode by the user, the computer may automatically go into hibernate mode when the battery reaches a low level. An alternative hybrid mode activates hibernate when the computer enters sleep mode, but the computer is not turned off. If the battery runs out while in sleep mode, the contents of memory have already been saved. See memory.
References in periodicals archive ?
Some of the earliest studies have involved not true hibernators but lab mice, which enter torpor under certain conditions.
The new battlefield resuscitation strategy is about slowing biological time, an idea that was borrowed from the "tricks" of natural hibernators, and is based on Professor Dobson's prior research innovation, Adenocaine([R]) technology, which is now used in the USA in cardiac surgery, and soon to be introduced in Europe and other international markets.
I keep telling people over and over again that the credit goes to the basic hibernator biology," Andrews says.
1038/nature11335) "Delayed phenology and reduced fitness associated with climate change in a wild hibernator.
Those anxious for a respite from the seemingly endless cycle of snowstorms might want to look beyond the woodchuck, or groundhog, which is a true hibernator, according to William J.
One impressive hibernator is the western conifer seed bug, only recently appearing in eastern North America.
Rarity and coexistence of a small hibernator, Zapus hudsonius, with fluctuating populations of Microtus pennsylvanicus in the grasslands of southern Ontario.
You're all for hanging, but you wanna be selective about it, only committing if it works for you, It's great to escape, hibernator, but don't say no to opps just 'cause they don't fit your criteria of total R&R, So if a getaway with the tam comes up?
It involves all of the major muscle groups and requires a good range of motion in several joints--something the average winter hibernator might not be quite ready for.
It's enough to get even the most die-hard hibernator out into the winter air.
Two pleas then: please don't light up when the wind is in the wrong direction for the neighbours both on and off the plot; and secondly, consider the local hibernators.
Since mammalian cells normally produce some hydrogen sulfide, the results could indicate how hibernators and other animals naturally enter torpor, says Hannah Carey, a researcher at the University of Wisconsin-Madison who studies hibernating ground squirrels.