I purchased a Maxtor Quickview 400GB to replace the drive in my Tivo 6490080. The drive is blank so I need to format it myself. I'm really nervous about this and have a couple of questions. I've seen a lot of talk about InstantCake and MFSTools. Are they both for formatting the drive? If yes, how do I know which would would be what I need? Is one easier to use than the other? Are there different versions of MFSTools? I know there are for InstantCake. How would I know which version I should get? I don't plan on copying the drive that's in Tivo now. This Tivo is only about 7 months old but, I'm concerned there might be something wrong with the current drive that I'm unaware of and don't want to take the chance of copying it to the new drive. I would like to save some of the programming though, if it's possible to do without copying the current drive. Can I transfer the programs to another tivo and then transfer them back to the original tivo after the drive is replaced? Thanks!