I am trying to conserve space on my Y580's SSD, and deleting the 6Gb hibernation file seems the logical course of action as I don't use the feature but try as I may, I am unable to remove the file.
Disabling hybrid sleep in the power options,
Disabling anything Hibernation related whatsoever in power options - this no longer shows up as an option anymore
Running an elevated Administrator command prompt to disable it (powercfg /hibernate off)
Entering Regedit and Putting 0's for any and all values (Hibernateenabled = 0)
Changing the permissions on the file itself to allow me to delete it (but it returns instantly)
Rebooting with all non-Microsoft services and all startups disabled (clean boot)
I am running Windows 7 x64 Home Premium.
To delete the hiberfil.sys file on Windows 7, follow the instructions from Microsoft:
Right-click Command Prompt and select "Run as administrator." Then the command will work.
Click Start -> All Programs -> Accessories Right-click Command Prompt Select Run as administrator Grant permisssion to change system settings In this privileged command prompt window, enter: powercfg -h off
If the above fails, a community user offered a tip: if you can delete the file, create an empty hiberfil.sys and set permissions to deny for every user.