Disable Hibernate Option

This Hibernate feature in Windows Seven and Windows Vista takes upto 8 Giga bites (GB) in your hard disk.

Click Start, and then click Run. Then in the open box, type ” cmd ” without quotes and then click OK.

From an administrative command prompt, type “powercfg -h off” to get that space back.

So this trick will help you to increase up to 8GB hard disk space