I got sucked in to buying upgrade instructions off of eBay. Seventeen pages of instructions, ending with the warning about booting to XP with TiVo drives installed. Unfortunately I was following the instructions step by step on about page six and booted without the CD drive being enabled for boot up. That apparently overwrote the the boot sector on my TiVo A and (does it matter?) on B. I see some cryptic references to Make TiVo Bootable, a utility I found. I also found many conflicting schemes for making it work. Does anyone have a routine they can send me that will bring the A drive boot sector back to something TiVo can read? Thanks.