I have installed Ubuntu 10.10 inside windows from Ubuntu CD with 12 GB space. How could I increase the disk space to 20 GB with out reinstalling Ubuntu ?
As an alternative, you can use the following script to move /home to a dedicated virtual disk.
Download wubi-add-virtual-disk, open a terminal and run:
Where the first argument is the directory to move to a new dedicated disk, and the second argument is the size in MB.
You should now reboot. If you are happy with the result, you can now remove /home.backup. To undo the changes remove /home, copy rename /home.backup to /home and remove the /home line in /etc/fstab.