vista
Unlike Windows XP, Vista doesn’t have a handy checkbox for turning off hibernation.
I recently installed TrueCrypt 5 (which is working beautifully) and used it to encrypt my whole C: drive. Since it’s encrypted hibernation does not work.
Well, I kept forgetting that and tried to put my laptop into hibernation.

I found instructions on this site for disabling hibernation which removes the choice from the start menu.

To disable hibernation:

  • Click Start followed by All Programs and then Accessories
  • On the Accessories menu Right Click on the Command Prompt
  • From the drop down menu, Click on the Run Administrator option
  • The Command Prompt window will now open
  • At the command prompt type: powercfg -H off

To enable hibernation:

  • Click Start followed by All Programs and then Accessories
  • On the Accessories menu Right Click on the Command Prompt
  • From the drop down menu, Click on the Run Administrator option
  • The Command Prompt window will now open
  • At the command prompt type: powercfg -H on