In Windows 8.1/10 in the root directory of the system drive (by default it is C:\) in addition to already familiar to many users pagefile.sys and hiberfil.sys, you can find swapfile.sys file, which was not present in earlier versions of the Windows OS. You will be able to see
There is a hidden partition created by default in Windows 7. This can be very frustrating, especially for IT administrators who are working with capturing and deploying images with Sysprep and ImageX. The boot files needed for Windows 7 to boot correctly are stored on this 2nd hidden partition.