Okay so i installed partition magic and accidentally installed bootmagic too. I was preparing to install windows xp and ubuntu. after i reboot after installing bootmagic, i get this btmagic.img error. i think "oh well, ill just install ubuntu. I installed ubuntu on my entire hard disk (therefor removing vista that bootmagic was on). halfway through installation i get some errors and then my dvd drive ceases to function (again). i am currently running off a ubuntu off a usb. Does anone know how i can remove the btmagic error from when i boot up, or at least replace btmagic with somethin that works? I need to do this via usb too. Please help.

( also i tried to install windows xp via usb but i keep getting error 8?).