When doing a Disk Cleanup in Vista you may see a chunk of memory (say 3GB) allocated to a "Hibernation File Cleaner". What on earth is this?
This is the "hibernation file" or hiberfil.sys. If you delete it, it will likely return. The purpose of the file is to save your desktop state when the computer goes into hibernation mode and the power goes off. Without it, what you were working on will be gone.
Control Panel -> Power Options will give you a console to control what the computer does in certain scenarios. For example, for a laptop, closing the lid may result in sleep whereas hitting the power on button will turn the machine off.
This is the "hibernation file" or hiberfil.sys. If you delete it, it will likely return. The purpose of the file is to save your desktop state when the computer goes into hibernation mode and the power goes off. Without it, what you were working on will be gone.
Control Panel -> Power Options will give you a console to control what the computer does in certain scenarios. For example, for a laptop, closing the lid may result in sleep whereas hitting the power on button will turn the machine off.
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