I could not run the Maxtor Diagnostic tool because I don't have a FDD on my computer.
The HDD is about one-year-old.
Actually I got it from a friend who works in Acer Service Center.
However, I realize that there is no warranty sticker on the HDD and in fact he didn't give me the receipt when he sent me the drive last year.
When I contacted him saying that I want to send him back the HDD, he said that the warranty is expired.
Anyway, I see that the Mfg Date stated on the HDD is 15Nov2005, and from Maxtor warranty site, the warranty is actually until 01/19/2009.
So, I guess he tried to fool me?
Tinygnome, I have backup all the files on the drive. Thanks.