I recently bought a older computer with 98 installed on it to tinker with. I Tried to upgrade it to XP (it met all the system requiremetns) and after the normal restart it would go to the blue sytem setup screen and frezes everytime. Ok, so i just thought to reformat and try a fresh intall. When i boot up it wont read the CD and says "invaid system disk." Odd to me but ok. I get a 98 disk...nothing. Take out the HD and reformat it in another computer and put it back in. it says, "no operating system," Duh, ok but it still wont read the CD. The CD drive works but do i need a start up floopy? I dont have a floppy dive so I hope not. Is there anyway to install windows xp on a separate harddrive in a different compouter and switch in into the older one?