Tron was originally released on VHS, Betamax, LaserDisc, and CED Videodisc in 1983.
To tie in with the home video release of Tron: Legacy, the movie was finally re-released by Walt Disney Studios Home Entertainment on Special Edition DVD and for the first time on Blu-ray Disc on April 5, 2011, with the subtitle "The Original Classic" to distinguish it from its sequel.