Summary: I have recorded many TV programs with my Sony DVD recorder. The model is RDR-GXD455 (RDRGXD455). I hoped to have the programs for a long time. However, with this recorder a long time is about three weeks. That's about how long I can go with a DVD that is full of favorite TV shows before the Sony recorder erases the entire disk. When I check the menu to see what is on the DVD, the message says “There is no title” and there is nothing on the DVD.