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When you turn off your computer using hibernate, the operating system needs to store all your current running program states onto the hard disk so that programs can resume where they left off when you power up your PC again. If you are the kind person that does not use Hibernate then this article is for you. If you look deep enough you will find out that there are two files called pagefile.sys and hiberfil.sys that occupy over few GB of your hard drive space. As from our last post, why your hard drive is always shrinking even though you did not do anything, we talked about using the freeware TreeSize to view where you have the largest chunk of data on your hard drive.
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