Not sure what you want to do here, but if you want to reformat the hard disk where XP is currently installed I guess you will need some sort of boot disk, (floppy). How to create a boot disk.
If you want to reformat and reinstall XP, then without that original XP Setup disk your only option is to obtain another one. May be Amazon or eBay will still have XP setup disks.
i built my computer from parts i bought off the internet, then bought an OEM windows xp from tigerdirect.ca
i dont have the disc anymore, is there any way to reformat my computer without the disc?
ATTENTION: this computer didnt come from a manufacterer pre built so there is no backup folder or any crap like that on it