How to Disable Hibernation in Windows 10
Hibernation is one of those Windows features that quietly runs in the background — most users never think about it until they notice it's eating disk space, causing wake issues, or simply isn't needed for their workflow. Disabling it is straightforward, but understanding what you're turning off — and what that means for your specific setup — matters before you make the change.
What Hibernation Actually Does
When you hibernate a PC, Windows saves the entire contents of your RAM to a file on your hard drive called hiberfil.sys, then powers the machine off completely. When you turn it back on, Windows reloads that file and restores your session — open apps, browser tabs, documents — exactly where you left them.
This is different from Sleep mode, which keeps the system in a low-power state with RAM still active. Hibernation uses zero power, making it useful for laptops that will sit unused for extended periods.
The tradeoff: hiberfil.sys is typically 60–75% of your total installed RAM in size. On a system with 16GB of RAM, that's potentially 10–12GB of storage reserved permanently on your system drive — even if you never use hibernation.
Why People Disable It
The most common reasons to turn off hibernation include:
- Freeing up disk space, especially on smaller SSDs
- Eliminating hiberfil.sys from the root of the C: drive
- Resolving wake or resume issues — some systems behave erratically after hibernating
- Faster boot behavior on systems where Fast Startup (which uses hibernation) causes problems
- Desktop PCs that are never unplugged and have no use for the feature
How to Disable Hibernation in Windows 10 💻
There are two main methods. The command-line approach is faster; the Power Options route is more visual.
Method 1: Command Prompt (Recommended)
This is the quickest and most reliable method.
- Press Windows + S and type
cmd - Right-click Command Prompt and select Run as administrator
- Type the following command and press Enter:
powercfg /hibernate off That's it. Windows immediately disables hibernation and deletes hiberfil.sys. No restart required.
To re-enable it later, run the same command with on:
powercfg /hibernate on Method 2: Power Options in Settings
This method gives you visual confirmation and is useful if you prefer avoiding the command line.
- Press Windows + R, type
powercfg.cpl, and press Enter - Click Change plan settings next to your active power plan
- Select Change advanced power settings
- Look for Sleep in the list, expand it, and find Hibernate after
- Set the value to 0 (zero) — this disables automatic hibernation
⚠️ Note: This method prevents Windows from automatically hibernating but doesn't remove hiberfil.sys or disable the feature entirely. If you want the disk space back, Method 1 is the definitive approach.
Method 3: Via System Settings (Simplified)
For users who want to remove Hibernate from the Start menu power options:
- Go to Settings → System → Power & Sleep
- Click Additional power settings
- On the left, click Choose what the power buttons do
- Click Change settings that are currently unavailable
- Under Shutdown settings, uncheck Hibernate
This only removes Hibernate from the power menu — it doesn't disable the feature or free up disk space.
What Happens to Fast Startup?
This is where it gets nuanced. Fast Startup — Windows 10's default quick-boot feature — relies on hibernation technology. It saves a kernel session to hiberfil.sys at shutdown so the next boot loads faster.
When you run powercfg /hibernate off, Fast Startup is automatically disabled as well. For most users, the difference in boot time is negligible, especially on SSDs. But on older HDDs, you may notice slightly longer startup times after disabling hibernation.
If boot speed matters to your workflow, that's a variable worth factoring in.
The Variables That Determine Whether This Makes Sense
| Factor | Considerations |
|---|---|
| Drive type | SSDs benefit most from reclaimed space; HDDs may see boot speed impact |
| RAM amount | More RAM = larger hiberfil.sys = more space freed |
| Desktop vs. laptop | Laptops may benefit from keeping hibernation for battery scenarios |
| Sleep/wake reliability | Some hardware has driver issues that hibernation triggers |
| Fast Startup dependency | Disabling hibernate also disables Fast Startup |
What Doesn't Change
Disabling hibernation has no effect on:
- Sleep mode — the machine can still enter and exit low-power sleep normally
- Shutdown and restart behavior
- Your files, apps, or system settings
- Windows Update processes
The only permanent change is the removal of hiberfil.sys and the loss of the ability to save a full session across a complete power-off.
Different Setups, Different Outcomes 🖥️
On a desktop with 32GB of RAM and a 256GB SSD, disabling hibernation frees roughly 20GB — a meaningful chunk of a small system drive. The feature likely wasn't being used anyway.
On a laptop with 8GB of RAM that gets packed into a bag for travel, hibernation may be the only way to preserve battery while keeping a full session intact overnight. Disabling it removes that option.
On a system with wake-from-hibernate driver conflicts — a surprisingly common issue with certain GPU or USB drivers — turning it off can resolve persistent instability that seemed unrelated.
The command itself takes seconds. What varies significantly is whether the trade-offs align with how a particular machine is actually being used day to day.