Troubleshooting RAID Setup: Our current RAID array with 5 drives in it is "md111". Its location is /dev/md111 Resize the blocks resize2fs -f /dev/md111 Stop Array mdadm --stop /dev/md111 Auto scan for arrays mdadm --assemble --scan Once the new mdadm.conf was ready, execute "sudo update-initramfs -u" This updats the conf file used by initramfs. sudo update-initramfs -u