it has already overwritten the old xp home files(unless u were upgrading to pro and installing to a different partition) so u will have to get it to finish the install or it wont run, i dont think its possible to boot back into the old one at this point and upgrades suck, u will have problems down the road for sure, get the data u want to keep off ur hdd to somewhere else, format, and do a clean install of pro would be my choice of action
Fear is nothing but the anticipation of pain, be it physical, mental, spiritual or emotional.
Athlon XP 2200+ oc\'ed @ 1.93ghz
Nvidia mx420 :(
60gig maxtor 7200rpm
Dual boot with Mandrake 10.0 and Win XP Pro sp2