I have a system with Fedora Core 2 installed on a set of RAID-1 partitions... Filesystem 1K-blocks Used Available Use% Mounted on /dev/md1 30233808 10920892 17777108 39% / /dev/md0 100890 24954 70727 27% /boot none 1037288 0 1037288 0% /dev/shm /dev/md4 80003680 23520020 52419624 31% /home /dev/md2 3019920 563648 2302864 20% /var While the Fedora Core 4 installer finds the md1 partition to upgrade during the Upgrade Examine step, when anaconda gets to the second step of upgrading the boot loader it claims one can not be found. I am left with the Skip Boot Loader Updating and the Create a New Boot Loader configuration options. I am totally baffled as to what approach I should take. I do realize that grub wants install the MBR on a specific drive however I already have the boot partition mounted as md0 at that stage of the installation process. What is the best approach here? I can imagine that changing the fstab entry for /boot to use hd0 instead of instead of md0 might help. However, this would seem likely to corrupt the md0 device since only one of the drives will be updated. Any advice on how to handle this would be most welcome as I would like to end up with /boot being a RAID-1 partition so that I can count on it being available if one of the drives dies. Jack