Using large disks with TiVo

While doing research into building a new 200+ hour DirecTivo unit, I stumbled across the current state of the art in large disk hacking.

Many trails lead to Todd Miller's guide to using large disks with TiVo, which includes his own hacks and even a patched kernel he's hacked together. Unfortunately from everything I've read, support for large (>137Gb) disks is largely limited to Series 1 TiVo devices, and these kernel hacks are a bit fragile, as TiVo OS upgrades may render your hacked box useless (or require a restore from backup).

TiVo Community member das Monkey has produced a detailed step-by-step how-to on his upgrade of a series 1 DirecTivo system with a 160Gb extra disk.