I'm sort of new to linux and have a problem with GRUB. I have a HDD rack that a 15Gb HDD is in and that contains linux (Fedora Core 4). It is set to slave. A fixed drive is a 250Gb that contains windows xp. I want to be able to change the HDD rack with another 200Gb HDD with another install of Windows XP on it. I get an error 17 when I switch. I know that GRUB must read my linux drive to boot grub (for the conf file.). What would be the best way to solve this problem without re-installing. I know I may have to but I need a solution. My MBR is on the windows drive (fixed drive in case.) If anyone can help please do.