Hibernation - Enable or Disable

Information

If you accidentally wiped out the Hibernation file Cleaner in Disk Cleanup and caused your hybrid sleep or hibernation mode to stop working, then you accidentally disabled the hibernation file. The size of the hibernation file (hiberfil.sys) will be the same as the amount of installed RAM. For more information, see: Microsoft Help and Support: KB929658 and Microsoft Help and Support: KB928897

NOTE

If you cleaned (disabled) this, all Hybrid and Hibernate settings will also be removed from the Advanced Power Options window. You will still be able to use normal Sleep mode though.

Tip

To set your computer to either use Hybrid or Hibernate sleep mode, make sure that the hibernation file is enabled/restored below and see steps 7 and 8 in STEP TWO here: How to Troubleshoot a Vista Sleep Mode Problem and Find a Solution to set the Power Options to use the Hybrid or Hibernate sleep mode.

• How to Troubleshoot a Vista Sleep Mode Problem and Find a Solution
• How to Create a Hibernate Shortcut in Vista
• How to Use Disk Cleanup in Vista
• How to Changed the Return to Sleep Timeout for a Unattended Wake Up in Vista

1. Open Start Menu.
2. In the white line (Start Search) area, type cmd
3. Right click on the cmd (at top), and click Run as administrator. (See screenshot below)



4. Click Continue for UAC prompt.

5. To Enable or Restore the Hibernation File -

A) In the command prompt, type powercfg -h on and press Enter. (See screenshot below step 6)
B) Go to step 7.

6. To Disable or Remove the Hibernation File -
NOTE: Using Disk Cleanup in METHOD TWO below is another way to disable or remove the hibernation file.

A) In the command prompt, type powercfg -h off and press Enter.

7. Close command prompt when it is finished.
NOTE: The Hibernation File Cleaner is now added back or removed from Disk Cleanup and the hibernate sleep mode is enabled or disabled again.

1. Open Disk Cleanup.
NOTE: For how, see: How to Use Disk Cleanup in Vista

2. To Disable or Remove the Hibernation File -

A) Check the Hibernation File Cleaner box and click OK. (See screenshot below)

B) Click on Delete Files to confirm. (See screenshot below)
NOTE: Disk Cleanup will now delete the Hibernation file and close.