You can speed up the boot process with a great solid-state drive, or by trying fast startup. Instead of saving the entire session onto the hard drive, the user gets logged off before the state is saved into the hibernation file, requiring less storage space and allowing quicker resume. Fast startup works similarly, but with one difference. When using hibernation, Windows 10 saves the data in memory to the 'hiberfil.sys' file onto the hard drive, allowing you to resume the previous session even after power loss. The best way to understand how the feature works is to step back and briefly explain hibernation.