The `Dallas` star lost his battle with cancer aged 81 last month and when his friend and co-star Linda Gray visited him in hospital, he told her he knew he wouldn`t survive until Christmas.
She told `Entertainment Tonight`: "He said, `I`ve got two weeks to live!` We went, `What are you talking about? Come on, we`ve got a scene on Monday ... you`re not going anywhere. That was the last time we saw him."
Linda insists her friend`s final days were not upsetting because he had accepted his fate and knew he had lived a long and full life.
She added: "He didn`t do sad. He wanted everything to be glorious. He wasn`t afraid of dying."
Linda has previously explained the beloved actor - who was best known for playing villainous J.R. Ewing in oil drama `Dallas` - had invited his entire family and friends to his hospital bedside in Medical City Dallas Hospital, Dallas, so he could be surrounded by loved ones on Thanksgiving (22.11.12).
She added: "He`d gotten to speak with everyone in the family individually. Then it was like, `OK, I`m done.` "
Linda has also revealed Larry expected death to be like taking drugs.
She said: "He was very open about having done LSD and he`d say, `I`m not afraid of dying. I`ve gone to the other side and I know it`s wonderful.` "