I got an Reburbished. IBM Storage engine earlier that comes with a 80GB WD SATA Drive. I try to put another Drive in it which is a 320GB Seagate SATA Model#:ST320620NS. When I attempt to install windows xp on it, it's all good until when it starts to copy files after quick format. it didn't finish and restarts by itself. I then try to Run PC CHECK on it from Eurosoft, it's stating that read test and read verified failed, but all other tests passed. but then all these drives are tested just fine with other hardware. when I run the same test for the original 80GB it passed all the test without any problem, and installs win xp without any problem. So I ended up didn't add the 320GB drive. Right now, I got another IBM eserver 336, it didn't come with a hard drive, when I plug in the 320GB, it does the same. although this time PC CHECK got stucked on loading screen and wouldn't run. but Memtest 4.0 passed without any problem. Any help is greatly Appreciated.