How to mount a degraded linux raid
mdadm -C /dev/md0 -l1 -n2 /dev/sda1 missing mkdir /mnt/sysimage mount /dev/md0 /mnt/sysimage chroot /mnt/sysimage
mdadm -C /dev/md0 -l1 -n2 /dev/sda1 missing mkdir /mnt/sysimage mount /dev/md0 /mnt/sysimage chroot /mnt/sysimage