The early leaked builds of Windows 8 reveal a new file system codenamed as “Protogon”. The “Protogon” file system in Windows 8 M2 or Windows 8 M3 builds appears to be still in its infancy prototype, but has been rumored to be a sub-child file system of NTFS which will be named as NTPFS, as it’s is supported with NT Protogon FS kernel mode driver.