On my laptop I have Ubuntu 11.10 and Windows 7 in dual boot mode.

I made a partition of 30 GB for Ubuntu but now it's too small and I want to increase this disk size from 32 GB to 100 GB.

This is home my disk looks like:

```
C Drive - 360 GB
D Drive - 200 GB
E Drive - 80 GB

```

On the F Drive I installed Ubuntu which contains 30 GB.

How can I increase this partition from 30 GB to 100 GB?

Someone suggested [Gpart](http://gparted.sourceforge.net/) tool to achiveve this. but there is a risk to lose my Windows or Ubuntu install.