How do I deleted a disk partition that is write protected?

What OS ARE YOU USING??? IF IT'S WINDOWS 95,98, OR MILLENIUM, YOU WILL HAVE TO USE FDISK.EXE at the command prompt. IF IT'S NT4.0,2000, XP, VISTA OR "7", YOU CAN USE DISKPART.EXE FROM THE C:\WINDOWS SYSTEM32\ directory at the command prompt instead, or better yet, right click on the start button itself, choose manage my computer, and use the disk administrator tool under the storage tab to list and change partitions at will. right clicking on any of the drives/partitions in the disk administrator tool will bring up the menu of what you can do to each partition.

Or you can download a disk partition management software: http://www.partition-magic.org/