Ok, I have parallels on macbook, running xp pro. When I open desktop, it is a black screeen that says Boot from hard drive..... a disk read error occurrred Press ctrl+alt+del to restart. No amount of restarts result in anything. Do I have to boot from the xp disc, will I lose files and programs on a reinstall. i just programmed the hell out of it and didnt have a chance to back it up.