Hi. A while back I purchased an upgrade kit from WK to add storage to a Tivo S2 TCD540040 unit. The kit came with a Maxtor 160 GB Quickview drive. As of now, that drive is still unopened, in its protective silver bag. I'm thinking about getting a S2 DT unit, say the TCD649 with 180 GB initial capacity. What I am wondering is, can I take that Maxtor drive and add it in to the TCD649 unit as a second drive? Basicaly, I'm curious to know if there are formatting issues or it will function "as is" as a second drive? Thanks, David