Morning all! This is an odd one. I had this many years ago, and never got it resolved, but let's try again. Why have I got 100GB of missing space? As you can see... Windows reports 165Gb and WinDirStat reports 49Gb. With what's installed.... I'd expect around 50GB. WinDirStat is seeing the pagefile, so it's not that. Hibernate is off... and even so... 100GB? Although WinDirStat appears to report no user files, that's because they're not on C: Even taking this into account, make no sense, as "My Documents" is MASSIVE... it's clearly reporting that correct as 0... there are no user files that I know of on C: Help!