Those hard drives are different, sorry. I'm saying hang onto the Roamio so you can swap it back in if the Bolt goes bad in multiple ways like mine. But don't let me jinx it! Lots of people are using Bolts without problems. You get a skewed view here because happy Bolt owners generally don't spend as much time on the internetz: they're busy happily watching their Bolts!If the hard drive was to fail with the one from the Roamio fit inside the bolt? Is that why you're saying hang on to the Roamio we're just hanging on to it in case anything happens to the bolt cuz the Roamio is so good?