Fast system is a new feature introduced by Microsoft which was first inducted in Windows 8. It starts up the PC faster than the traditional startup and it is turned on by default.
How Fast Startup works?
The working of Fast Startup is that when you turn off your PC it automatically saves the copy of all loaded drivers and kernel to a file called hibernate file (hiberfil.sys) located in the root of the drive where Windows 10 is installed.
The hiberfill.sys is used by hibernate feature but when you shut down your PC the huberfill.sys file will be used to save loaded drivers and kernel before shutting down so Windows can quickly load them back into memory when you turn your PC on. Hibernation feature must be turned on in order to use this feature. By default this feature is turned on and Windows uses this instead of the cold startup.
Turn on or off Fast startup in Windows 10
* If you have turned on Fast startup but want to perform a traditional cold shut down once in a while without turning off Fast startup or hybrid boot, open Command Prompt as administrator, type shutdown /s /f /t 0, and then press Enter key.
Step 1: Type Power Options in the start menu search bar and press enter.
Also you can right-click on the start menu and then click on the Power options.
Step 2: on the left had side click on Choose what the power button do from the options.
Step 3: Now click on Change settings that are currently available.
Step 4: Scroll down, under Shutdown section, check the box labelled Turn on fast startup to enable fast startup feature. Now click save changes to apply the changes.
And if Turn on fast startup option is not appearing, as said in the beginning of this article, it’s likely because hibernation feature is turned off on your PC. You need to enable hibernate first, and then follow these steps again to see Turn on fast startup option.
Turn on or off Fast startup using Registry
Step 1: Open Registry Editor by typing Regedit in the Start menu and then press enter.
Step 2: Navigate to the following:
Step 3: On the right-side, locate the value named HiberbootEnabled, double-click on it, and change the value data to 1 (one) to turn on fast startup. Set the value to 0 (zero) to turn off the feature.