External HDD won't start up

putt the actual hdd in master and the 1 ur having problem with in slave mode boot windows go 2 controle panel administartive tools and device manager or manegment somthink like that and in the diagnostik box take the last option frome the second 1.u must see ur seond hdd that u put on slave..format it...after that putt it alone and boot frome windows xp and install ur windows this will work