I have some suggested tweaks and changes to http://wiki.centos.org/HowTos/Install_On_Partitionable_RAID1 1. The user should be instructed to start rescue mode with networking in order to be able to retrieve the patch for mkinitrd. 2. The command to create /etc/mdadm.conf will result in an extra line "spares=1" while the array is still syncing. Adding " | head -1 " to the command to create it fixes the problem. 3. Some additional discussion on how to handle multiple partitions should be added. There is an implicit assumption that only "/" is used. 4. It is not necessary to change "LABEL=..." to "/dev/md_d0..." in /etc/fstab and /boot/grub/grub.conf. 5. There is no indication of the page author - Lev Shamardin - nor statement about page maintenance preferences. If the page author, Lev Shamardin, does not object I would be glad to make the changes, or to further discuss them. Phil