Question: Ok, so I know what hiberfil.sys is, and I want to use hibernation on my laptop.

But I have another hard drive active in my laptop, it's taken from my old one... and I want to get rid of the hiberfil.sys on that drive. But even with admin privileges I can't delete it.

Any ideas?

Answer: 
I wanted to do this in the easiest way possible, especially without rebooting.

Open a command prompt as administrator and go to the disk where hiberfil.sys resides. In my case:

```
C:\Windows\System32\> e:

```

In e:, check for hidden files:

```
E:\> dir /A:H

```

In the listing hiberfil.sys should show up. If so, delete it:

```
E:\> del /AS hiberfil.sys

```

I have to warn you: I don't know what happens if you do this with an active hiberfil.sys file. In my case it was on an old hard disk drive and was no longer needed.
**Right click the drive**, click **Properties**, and go to the **Security** tab.

Use the **Edit** button to give **Full control** to Users and Authenticated Users.

After that, you should be able to delete the file via the command prompt (make sure that you're using the correct current directory):

```
del /f hiberfil.sys

```

That should get rid of the file. I recommend changing the permissions back afterwards.

[![enter image description here](https://i.stack.imgur.com/X3hTp.png)](https://i.stack.imgur.com/X3hTp.png)