My 20 gig HDD is a maxtor 32049h3,and the 40 gig is a seagate st340014a,im using windows xp pro sp1,my cpu is p3 500mhz,as for the mother board i havent a clue but i recken its pretty old coz theres only a slot 1 p3 on it and nothing else to upgrade to.the 32 gig im on about?on the back of the 40 gig drive were the jumpers go theres the master setting,the cable select setting then a blank two pins that do nothing then the last two jumper pins are that(32 gig) dont know why?just now ive been to seagate website downloaded there disk wizzard,started it and did what it said word for word and every thing was cush till it turned off to re boot and to give me a chance to change the jumpers.So jumpers changed every thing wired back up i turn the computer on and it did the same thing it did on day one.and thats,on the first screen that comes up were it detects the hardware,it says IDE primary master(press f4 to skip)....... and thats it .It stays there and does nothing.if i change the jumper back to the 32 gig setting it comes on says primary IDE ........ and underneath the 32 gig drive comes up as slave and it boots up perfect.in fact im on it now.the 40 gig drive in but only giveing me 32 and the 20 unplugged.I cant understand it but i only now the basics anyway so maybe you know now youve got the full picture?or its ntfs not fat 32,could that be it,or maybe somet to do with my cmos or bios?any way any ideas would be gratefull thanks.