Disable Hiberfil Sys Jun 2026

If you need Fast Startup but want to reduce space, you can set a smaller hibernation file:

This is the most common reason. If you have a smaller SSD (e.g., 128GB or 256GB), freeing up 10GB+ can make a massive difference.

John had been noticing that his computer's hard drive was getting smaller and smaller over time. At first, he thought it was just a matter of having too many files and programs taking up space, but as the days went by, the problem persisted. He would delete files, empty the recycle bin, and even run disk cleanups, but still, his hard drive seemed to be shrinking.

The most efficient way to disable hibernation and automatically delete the hiberfil.sys file is through the or PowerShell with administrative privileges. How to delete and disable hiberfil.sys - IONOS

Disabling hiberfil.sys via powercfg -h off is a safe, reversible method to reclaim disk space on Windows systems where hibernation is not needed. The trade-off is losing Fast Startup and Hibernation, but Sleep and Shutdown remain fully operational.

This limits the file to 60% of RAM – enough for Fast Startup but not for full hibernation.

, Windows: