Press Win+W key, start typing Power and hit Enter to open Power Options. The Fast Startup option is enabled by default in Windows 10/8. Enable or Disable Fast Startup in Windows 10 Using this file during boot gives a substantial time-advantage while starting Windows 10/8. As a result, it takes much less time to write it to disk.
Unlike the full hibernate data, whose file size is very large, this “kernel only” or 0 Hibernation data file is much smaller. But in Windows 8, the kernel session is not closed, but it is hibernated. In Windows 7, during a shutdown, the OS closes the user session and the kernel session. This new Fast Startup mode is a hybrid of the traditional cold boot and resuming from hibernate option. According to usage data it had, it found that a very small percentage of users actually preferred to use the Hibernate option. Currently, in Windows 7, users could either shut down their computers, put it to Sleep or Hibernate. In Windows 8/10, Microsoft has introduced a way to start your computer.
