Windows 11 Disable Hibernation File -

powercfg /h off No registry editing, no reboots needed. Your disk space returns instantly. Reducing writes by removing hibernation can also slightly extend SSD lifespan, though modern SSDs handle it fine. The real win is more free space .

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. windows 11 disable hibernation file

Open Command Prompt as Admin (right-click Start button → Terminal (Admin) → choose Command Prompt). powercfg /h off No registry editing, no reboots needed

She verified with:

Frustrated, she opened and clicked “Show more categories.” That’s when she saw it: “System & reserved” was huge. The real win is more free space