Summary: This hard drive has been good to me, and I don't recall it ever giving me problems. I wish I had one of a larger size, since updates and all that crap usually seem to pile on versus replacing what has been updated (never understand that with some developers... REPLACE the updated software versus leaving it on the system to hog up space!!!).
Summary: The drive works just fine. I checked Seagate for warranty info for the specific drive and it says it is a component from a system. So this used drive is a system pull, and Seagate will not warranty if it fails. I guess Amazon will handle the warranty since it said it has one for 2-years. I'll keep my fingers crossed, but I think you'd be better purchasing new.
Seagate Momentus 320GB Sata Notebook 2.5" Hard Drive
14 September 2013
Summary: I have owned this drive now for at least 6-7 months and not an issue. Works great with no issues at all. Also very quiet drive. Barely hear a sound. Installed it in my Macbook to replace the stock 80GB. No issues with Apples older SATa controller unlike some other SATA 3 drives I tried. Highly recommended!!