Solved Missing disk space.


Kol12

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WinDirStat says my C: totals 71.2GB and File Explorer says I'm using 96.1GB of C:

WinDirStat normally reads everything so I'm scratching my head wondering where the other 26GB is. :unsure:
 

My Computer

System One

  • OS
    Windows 11 - Release Preview channel
    Computer type
    PC/Desktop
    Manufacturer/Model
    Kol's custom ROG
    CPU
    Intel 13900K
    Motherboard
    Asus ROG Maximus Hero Z790
    Memory
    Corsair Dominator Platinum RGB 32GB DDR5 6000MHz
    Graphics Card(s)
    Gigabyte 4090 Gaming OC
    Sound Card
    SoundBlaster X-AE5
    Monitor(s) Displays
    Dell Alienware AW3821DW
    Screen Resolution
    3840x1600 144hz
    Hard Drives
    Samsung 980 Pro 500GB
    860 EVO's
    Samsung 990 Pro 2TB
    External RAID enclosure - 2x Seagate 3TB HDD
    PSU
    Seasonic Prime Ultra 1300W Platinum
    Case
    Phanteks Eclipse P600S
    Cooling
    Custom water cooling. EK Velocity (CPU), EK Quantum Vector2 (GPU), EK Quantum D5 Pump, 360mm radiator in case + 560mm external radiator
    Keyboard
    Corsair K100
    Mouse
    Logitech G502X
    Antivirus
    Windows Defender, VBS
WinDirStat is from 2008, maybe try something better like WizTree or TreeFile.
 

My Computer

System One

  • OS
    Windows 11 Home
    Computer type
    PC/Desktop
    CPU
    AMD Ryzen 5 8600G (07/24)
    Motherboard
    ASROCK B650M-HDV/M.2 3.09 (07/24)
    Memory
    2x32GB Kingston FURY DDR5 5600 MHz CL36 @4800 CL40 (07/24)
    Graphics Card(s)
    ASROCK Radeon RX 6600 Challenger D 8G @60FPS (08/24)
    Sound Card
    Creative Sound BlasterX AE-5 Plus (05/24)
    Monitor(s) Displays
    24" Philips 24M1N3200ZS/00 (05/24)
    Screen Resolution
    1920×1080@165Hz via DP1.4
    Hard Drives
    Kingston KC3000 NVMe 2TB (05/24)
    ADATA XPG GAMMIX S11 Pro 512GB (07/19)
    PSU
    Seasonic Core GM 550 Gold (04/24)
    Case
    Fractal Design Define 7 Mini with 3x Noctua NF-P14s/12@555rpm (04/24)
    Cooling
    Noctua NH-U12S with Noctua NF-P12 (04/24)
    Keyboard
    HP Pavilion Wired Keyboard 300 (07/24) + Rabalux 76017 Parker (01/24)
    Mouse
    Logitech M330 Silent Plus (04/23)
    Internet Speed
    500/100 Mbps via RouterOS (05/21) & TCP Optimizer
    Browser
    Edge & Brave for YouTube & LibreWolf for FB
    Antivirus
    NextDNS
    Other Info
    Backup: Hasleo Backup Suite (PreOS)
    Headphones: Sennheiser RS170 (09/10)
    Phone: Samsung Galaxy Xcover 7 (02/24)
    Chair: Huzaro Force 4.4 Grey Mesh (05/24)
    Notifier: Xiaomi Mi Band 9 Milanese (10/24)
    2nd Monitor: AOC G2460VQ6 @75Hz (02/19)
Since stock apps have deeper level access to the system, it is likely giving out the correct information (unless there is a bug).
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    Laptop
    Manufacturer/Model
    HP Envy dv7
    CPU
    Intel Core i7 3630QM
    Motherboard
    HP
    Memory
    16 GB
    Graphics Card(s)
    Intel HD Graphics 4000 & Nvidia GeForce GT 635M
    Sound Card
    IDT High Definition
    Screen Resolution
    1080p
    Hard Drives
    1 TB Crucial MX500 on bay 1.
    1 TB Seagate HDD on bay 2.
    Antivirus
    Windows Defender
Look at the size allotted for system restore and if you're using hibernate the size of your hiberfil.sys (this is a hidden folder so to see it you have to go to file explorer options-view tab-check box next to 'show hidden files, folders, and drives.) I agree with @TairikuOkami that TreeSize is a good program for finding what eats your disk space.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 24H2 26100.2314
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Optiplex 7080
    CPU
    i9-10900 10 core 20 threads
    Motherboard
    DELL 0J37VM
    Memory
    32 gb
    Graphics Card(s)
    none-Intel UHD Graphics 630
    Sound Card
    Integrated Realtek
    Monitor(s) Displays
    Benq 27
    Screen Resolution
    2560x1440
    Hard Drives
    1tb Solidigm m.2 nvme+256gb SKHynix m.2 nvme /External drives 512gb Samsung m.2 sata+1tb Kingston m2.nvme+ 4gb Solidigm nvme
    PSU
    500w
    Case
    MT
    Cooling
    Dell Premium
    Keyboard
    Logitech wired
    Mouse
    Logitech wireless
    Internet Speed
    so slow I'm too embarrassed to tell
    Browser
    Firefox
    Antivirus
    Defender+MWB Premium
  • Operating System
    Windows 10 Pro 22H2 19045.3930
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Optiplex 9020
    CPU
    i7-4770
    Memory
    24 gb
    Monitor(s) Displays
    Benq 27
    Screen Resolution
    2560x1440
    Hard Drives
    256 gb Toshiba BG4 M.2 NVE SSB and 1 tb hdd
    PSU
    500w
    Case
    MT
    Cooling
    Dell factory
    Mouse
    Logitech wireless
    Keyboard
    Logitech wired
    Internet Speed
    still not telling
    Browser
    Firefox
    Antivirus
    Defender+MWB Premium
Thanks for the replies. I determined the issue was I was not running the app as administrator and therefore the app didn't have access to some files.

I also found an app on the MS store called TreeSize free. Is anybody familiar with it?
 

My Computer

System One

  • OS
    Windows 11 - Release Preview channel
    Computer type
    PC/Desktop
    Manufacturer/Model
    Kol's custom ROG
    CPU
    Intel 13900K
    Motherboard
    Asus ROG Maximus Hero Z790
    Memory
    Corsair Dominator Platinum RGB 32GB DDR5 6000MHz
    Graphics Card(s)
    Gigabyte 4090 Gaming OC
    Sound Card
    SoundBlaster X-AE5
    Monitor(s) Displays
    Dell Alienware AW3821DW
    Screen Resolution
    3840x1600 144hz
    Hard Drives
    Samsung 980 Pro 500GB
    860 EVO's
    Samsung 990 Pro 2TB
    External RAID enclosure - 2x Seagate 3TB HDD
    PSU
    Seasonic Prime Ultra 1300W Platinum
    Case
    Phanteks Eclipse P600S
    Cooling
    Custom water cooling. EK Velocity (CPU), EK Quantum Vector2 (GPU), EK Quantum D5 Pump, 360mm radiator in case + 560mm external radiator
    Keyboard
    Corsair K100
    Mouse
    Logitech G502X
    Antivirus
    Windows Defender, VBS
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