What is windows 10's fast startup?

What is windows 10's fast startup?

Windows 10 is pretty new, but that doesn't mean we're not already looking for ways to speed it up. One built-in feature that can help us accomplish this is "fast startup," which combines the hibernation and shutdown properties to give you a slightly speedier boot-up experience.
Fast startup is sort of like shutdown light -- when fast startup is enabled, Windows will save some of your computer's system files to a hibernation file upon shutdown (or rather, "shutdown"). Then, when you turn your computer back on, Windows will use these saved files to boot up quicker -- basically, booting from hibernate instead of from scratch.
For obvious reasons, fast startup only works if you have hibernate enabled (learn how to enable/disable hibernate here). Also, fast startup only affects shutdowns, not restarts.
Here's how to turn it on (or off):
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Sarah Jacobsson Purewal/CNET
1. Open the Settings menu by clicking the Start button and clicking Settings. In the Settings menu, go to System > Power & sleep and click Additional power settings.
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Sarah Jacobsson Purewal/CNET
2. The Power Options window will open. On the left side of the screen, click Choose what the power buttons do.
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