sector7g

I installed xp via winsetupfromusb Everything was fine the first attempt. I messed up some setting went to reinstall it and XP ended up on D: drive and I cannot boot without selecting 2nd part of setup while booting from the thumb drive. I seen the faq, does that mean I should just reinstall it making sure hdd is 1st boot device (might have changed this for 2nd install) or can I fix it without reinstall. (it does take an awful long time to install) Thank for the help.