Environment: CentOS 6.2 amd64 (min. server install) 2 virtual hard disks of 10GB each Linux KVM Following the instructions on CentOS Wiki <http://wiki.centos.org/HowTos/Install_On_Partitionable_RAID1> I installed a min. server in Linux KVM setup (script shown below) <script> #!/bin/bash nic_mac_addr0=00:07:43:53:2b:bb kvm \ -vga std \ -m 1024 \ -cpu core2duo \ -smp 2,cores=2 \ -drive file=/home/arunk/KVM/vdisks/centos62.raid1.disk1.img \ -drive file=/home/arunk/KVM/vdisks/centos62.raid1.disk2.img \ -net nic,vlan=1,model=e1000,macaddr=${nic_mac_addr0} \ -net tap,vlan=1,ifname=tap0,script=no,downscript=no \ </script> The system boots fine when both disks are available. When I remove either of the disks (delete the -drive file= line), the system boots to a point wherein the GRUB menu is displayed and the progress bar displays for a while till the white bar reaches about halfway point and then it: Kernel panic - not syncing: Attempted to kill init! The purpose of the above exercise was to test if the system will work in spite of losing one of the disks which is what RAID1 is supposed to do (I am emulating by removing the disk image line from the definition of the system). Has anyone tested CentOS 6.2 on partitionable mdadm RAID1 setup in bare metal hardware? Any suggestions/ideas as to what I may doing incorrectly? FWIW, outputs from "fdisk -l" and "df -hT" <fdisk -l> root at centos62-raid1 ~ > # fdisk -l Disk /dev/sda: 10.7 GB, 10737418240 bytes 255 heads, 63 sectors/track, 1305 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000e8353 Device Boot Start End Blocks Id System /dev/sda1 * 1 523 4194304 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 523 1045 4194304 83 Linux /dev/sda3 1045 1176 1048576 82 Linux swap / Solaris Disk /dev/sdb: 10.7 GB, 10737418240 bytes 255 heads, 63 sectors/track, 1305 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000e8353 Device Boot Start End Blocks Id System /dev/sdb1 * 1 523 4194304 83 Linux Partition 1 does not end on cylinder boundary. /dev/sdb2 523 1045 4194304 83 Linux /dev/sdb3 1045 1176 1048576 82 Linux swap / Solaris Disk /dev/md_d0: 10.7 GB, 10737352704 bytes 2 heads, 4 sectors/track, 2621424 cylinders Units = cylinders of 8 * 512 = 4096 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000e8353 Device Boot Start End Blocks Id System /dev/md_d0p1 * 257 1048832 4194304 83 Linux Partition 1 does not end on cylinder boundary. /dev/md_d0p2 1048833 2097408 4194304 83 Linux Partition 2 does not end on cylinder boundary. /dev/md_d0p3 2097409 2359552 1048576 82 Linux swap / Solaris Partition 3 does not end on cylinder boundary </fdisk -l> <df -hT> # df -hT Filesystem Type Size Used Avail Use% Mounted on /dev/md_d0p1 ext4 4.0G 1.9G 1.9G 50% / tmpfs tmpfs 499M 0 499M 0% /dev/shm /dev/md_d0p2 ext4 4.0G 136M 3.7G 4% /home </df -hT> -- Arun Khan