Disable Hibernation File | Windows 11

powercfg /hibernate size The output showed: Hibernation file size: 40% of total memory (approx. 18.9 GB)

powercfg /h off Press Enter.

She cleaned temporary files, uninstalled old apps, and even ran Disk Cleanup. Still, almost had quietly vanished. windows 11 disable hibernation file

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She had , so Windows reserved roughly 6–8 GB normally — but here it was almost 19 GB . Why? The real issue Hibernation ( hiberfil.sys ) stores everything in RAM to disk so you can shut down and pick up exactly where you left off. But Windows 11 increases that file to up to 40–50% of RAM if Fast Startup (hybrid shutdown) or hibernation is enabled — even if she never used hibernation. powercfg /hibernate size The output showed: Hibernation file

powercfg /h size 20 That would reduce it from 19 GB to ~3.2 GB in her case. Check your hibernation file size if you’re low on disk space in Windows 11. If you never use Hibernate (only Sleep and Shutdown), disable it with:

Frustrated, she opened and clicked “Show more categories.” That’s when she saw it: “System & reserved” was huge. Still, almost had quietly vanished

Finally, she opened and typed: