I have a Tivo Series 2 box: Model # TCD540040. Software version 7.2.1 I have been reading a lot on upgrading the hdd space. Many articles talk about some models only being able to read 137gb of a drive. But I have seen others saying that now the software supports lba and now can go larger. Since I am new to this, I am lost. At this point I don't want to replace some kernel somewhere ( I wouldn't even know how). Without having to change something like that. What is the largest drive my tivo can use? Thanks a ton.