# Boot with Ubuntu Live USB and use Gparted to partition the new disk that will replace the faulty one.

# Reboot and wait until (initramfs) shell.

# In (initramfs) shell:

mdadm --detail --scan

mdadm --stop /dev/md0

mdadm --stop /dev/md1

mdadm --assemble /dev/md0 /dev/sda1 /dev/sdb1

mdadm --assemble /dev/md1 /dev/sda2 /dev/sdb2

mdadm --examine /dev/sda

mdadm --examine /dev/sdb

mdadm --examine /dev/sda1

mdadm --examine /dev/sdb1

mdadm --examine /dev/sda2

mdadm --examine /dev/sdb2

mdadm --detail --scan

cat /proc/mdstat

mdadm --assemble --scan

mdadm --detail --scan

cat /proc/mdstat

mdadm -a /dev/md0 /dev/sda1

mdadm -a /dev/md1 /dev/sda2

# After recovery finish, check the RAID details using the below commands:

cat /proc/mdstat

mdadm -D /dev/md0

mdadm -D /dev/md1