Advertisements My S3 is starting to occasionally stutter. I first noticed it during live viewing when it looked like stop motion video. On some playbacks it will lose a few frames for a few seconds before returning to normal. This may happen every few minutes when its occurring. I'm assuming its a hard disk problem. Anyway of determining internal or external drive without shutting it down and Spinrighting the drives? I've never seen any discussion of SMART drive capabilities so I guess either Tivo doesn't have it or it just reports it to HQ for QA purposes.