I just got a 20 gb HD same speed as my 30GB hd there both 7200 rpm. I put it into my PC and as soon as I started my PC the loading took 4X as long to load as well as shutting down takes 4X as long to shut down. I was thinking about just reformatting, but I don't want to go through the trouble of reinstalling all my software. Is there something wrong with my IDE Cables? should i do anything particular to my hardware? Is there something wrong with my PC not being able to read the second HD? Is reformatting My Best Bet? What About Defragmentation? Please If Anyone is able to help me I would glady hear your advice thank you!