big THANKS to Peccavi, GX1_Man, Backdated and MASH.
I know a clean install is a last resort option. my system restore had become corrupted.
when i am prompted to 'hit any key to boot from cd, i waited and it remains in that state. it says press ctrl,alt,del. if i wait two hours, nothing happens. then when i press ctrl,alt,del, the cycle begins again. i even used a seagate utility and ran a zero-fill. it took a long time, but no luck. same thing. at first i had created two partitions and when that wasn't working, i tried one big partition. and yes, i am using my original xp home disk. i slaved this hard drive to the 20 gig that loaded ok and it shows the hard drive has a lot of files left on it. zero fill is a misnomer.
i have to go to work, but will check after work for any additional ideas. thanks so much.