By default, when Windows Vista's Disk Defragmenter runs on a schedule, it attempts to defragment every volume on your computer, including all drives and partitions. There may be circumstances, however, where you wish this tool to only work on particular volumes and not to automatically defragment new volumes as they are added. Thus, to change this setting:

1. Click the "Start" button and type disk defragmenter, then click "Disk Defragmenter" when it appears. Or, click the "Start" button, select "All Programs", "Accessories", "System Tools", then "Disk Defragmenter".

2. Confirm you wish to run this tool if User Account Control (UAC) prompts you.


3. The "Disk Defragmenter" dialog box appears. Click the "Select Volumes" button.

4. The "Disk Defragmenter: Advanced Options" dialog box appears. Check the boxes next to volumes (disks / partitions) you wish to defragment and uncheck the other boxes. Also, uncheck the box "Automatically defragment new disks" if you wish the Disk Defragmenter to not automatically defragment new volumes when they are added to your machine.

5 Click "OK" on the dialog boxes to close them.

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