Quote: Originally Posted by lazyislander
Quote: Originally Posted by doubled822
Few questions I haven't seen, what is the make, model and speed of your drives? Also, in your BIOS, is the hard drive set for AHCI or Compatibility?
The hard drive is set to AHCI, should i try compatibility, what exactly does that do??
I think you're probably good with it set to AHCI; it's probably best to leave it that way. See more about it here: AHCI : Enable in Windows 7 / Vista
I think the best bet to resolve this quickly and safely is to try what I posted earlier. Boot from a DVD/CD so that the OS on the hard drive isn't running and hiding those files from WinDirStat. That way WinDirStat will be able to categorize those files properly.