I have XP pro as the main OS. I installed fedora on my 2nd HD. Everything seemed OK. I rebooted, and all was well. I updated fedora, and when I rebooted, it stopped at GRUB, with the screen locked up. I now have to boot with the floppy. The XP is now not available at all. It seems the MBR has been changed as even when I unplug the 2nd HD, it still hangs at GRUB. Also any suggestions of a good place to learn LINUX? Books, website's lists. Thanks, Phil