salam allz jinab problem yeh hay k meray PC (Dell gx 270) main 40 gb hard drive hay main ab us main 80 gb sata add kar raha hon or us 80 gb main data b hay per jub use plugin kar k pc boot karta hon tu ntdlr missing ka eror ata hay window re unstall karnay laga tu window pehlay sata ko format karb=nay ko keh rahi hay or sata default C drive ban jati hay plz expertz mujhay koi aisa sulutuion batain k main bagher format kiye isay use kar sakon