uninstalled windows 2000

hello. i uninstalled windows 2000 from my D drive using the MS_dos propmt on windows 98.i was aving problems with 2000,,formatted Drive starting all over..ready to install again,,would not let me install, message say i have more than i operating system already..
but 2000 has been removed.rebooted computer message appears on screen as windows 2000 and windows 98 select 1..how do i remove that ,,so i can instal windows 2000 on my D drive again..