Unpartioning my Mac book pro 320 GB hard disk

My mac book pro had a 320 GB hard disk.My Lion instalation is only 20 GB and the rest of the drive remains as another partition.I can delete that partition and make it as free space but cant add to my Lion partition.how can i add the free space to my Lion partition to get more space.

1. Copy the files you have in the second partition to your OS X volume.
2. See > http://pondini.org/OSX/DU4.html

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