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June 29th, 2026 13:48
Windows 11 high disk usage
I noticed that my Windows System and Reserved files are using over 129Gb of the disk space. Most of it seems to be in three folders.
Windows 52gb
Program Files 32 gb
Program files (x86) 11 gb
That just seems like an insane amount (more than 1/3 of the disk space) I have already run chkdsk /r and there doesn't seem to be a problem. So what is going on? How do I fix this disk space hogging
Currently running Windows 11 Home Ver 25H2 OS build 26200.8655
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jemsbr121
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June 29th, 2026 15:46
One thing that helped me was checking Task Manager to see which process was actually causing the disk activity. Sometimes it's Windows Search, SysMain, or even a background update. If it's staying at 100% all the time, it's also worth checking the drive's SMART health to rule out a failing disk.