Dynamic Drive Overlay DDO <storage, software> (DDO) Software to allow a {system BIOS} that does not support {Logical Block Addressing} to access drives larger than 528 MB. The alternatives are to update the system BIOS or install an {EIDE controller} card with a suitable on-board BIOS. Seagate (http://seagate.com/support/disc/drivers/discfile.shtml). (2001-03-18)