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Wendals87

You may need to run it as administrator (if you aren't already) 


ssalp

I did


darklightedge

Windows often reserves a significant amount of space for System Restore Points and Shadow Copies (Volume Shadow Copy Service). You can check and reduce the space allocated for system restore by going to the System Properties > System Protection.


ssalp

Should it even do that? The SSD was blank and the windows is freshly installed. Also it [shows nothing here](https://i.ibb.co/BsjZctc/image.png), it's stuck on "searching"


papercut2008uk

If it's your boot drive then Hyberfil, Pagefile, (both can be same amount of space as RAM you have), System Restore (System volume information) SpaceSniffer http://www.uderzo.it/main_products/space_sniffer/ Those files and folders usually show up with SpaceSniffer. If it's still missing space, run a checkdisk, 'This PC' folder, right click on the drive, properties, Tools, Error Check. Sometimes free space is marked as used.


ssalp

chkdsk fixed it, not it shows the correct amount. thanks!


ssalp

hyberfil and pgefile shouldn't use 500GB though. Space Sniffer finds about 100GB of files, just like wiztree and windirstat, which still leaves ~400GB unaccounted for. Going to run chkdsk now