I recently installed xp pro after fully formatting c drive. The pc has struggled with xp and i am now wanting to remove it completly and put 98se back on. I have a 98 start up floppy and 98se installation disk available. I have tried booting off the start up floppy to a dos prompt, I then typed in "format C:" to be informed invalid command. My plan was to format c drive this way and then boot up off 98se installation cd to re install. My plans have gone sadly wrong can anyone please help me.