Ned_, i was having 3 physical hdd's partitioned as /dev/sdx1,/dev/sdx2 .. so this schema is cloned for the 3 hdd's and /dev/sdx1 for all the hdd's are dedicated for /boot and is a RAID1 array, /dev/sdx2 under all hdd's is for an LVM group which is VolGroup00 and is a RAID5 array, VolGroup00 have 2 LVM partitions which is the swap partition and the root partition, the problem is.. is got a new hdd and added it and included it in the raid array for both the /boot and the VolGroup00 raid partition and also i resized the file system for the LVM and everything were fine, i was able to work on the station for about 14 hours and it was good so after a small reboot i got these errors.. [mdadm: no devices found for /dev/md1] \ [No Volume groups found] \ [Volument group "VolGroup00" not found] \ [Unable to access resume device (/dev/VolGroup00/LogVol00] .. and many other