What windows version are you running?

IF XP or before, you will have to use an external application. For Vista, Disk Manager will do it and it's built into the OS.

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Thanks to Solar Wings for the special siggy.

The VERY best is Easeus!! The user interface is excellent. You can place your cursor on the graph for the desired drive and just click and drag the partition divider to enlarge or reduce the size. You have to have open space on either side of the partition you want to enlarge so you first may have to transfer some data off of one partition and delete it so you have empty space. Once you have decided what you want to do you have to click a box in the lower left corner marked jobs to perform or something like that. If you want to clone a disk Easeus has a free program named Drive cop or disk copy that also works well though it takes longer than Acronis which costs aropund $30-free is best!Good luck, Steve Wells