Updated: 10/04/2017 by Computer Hope

DDO may refer to any of the following:

1. Short for Dynamic Drive Overlay, DDO is a TSR that loads onto sector two of a hard drive. Used with computers that do not support LBA mode, DDO allows a computer to recognize and support drives larger than 520 MB.

2. Short for Dungeons & Dragons Online, DDO is an online card game that can be found at: http://www.ddo.com/

Game terms, Hard drive terms