Step One
Launch Boot Camp Assistant from the Applications:Utilities folder.
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Step Two
Click the Continue button.
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Step Three
Check only the Install or remove Windows 7 option and click Continue.
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Step Four
Choose Restore disk to a single Mac OS partition and click Continue.
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Step Five
Click the Restore button to begin.
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Step Six
You will be asked to login with your Administrative username and password. Enter these and click the OK button.
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Step Seven
You disk will now be repartitioned to remove the Windows volume.
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Step Eight
You will be informed that your disk has been restored as a single volume. Click the Quit button.
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