i have tried all the available images you offer in oowow and all give the same issue. it would appear that there is no RAID/mdadm support in any of your images. I am trying to mount an existing raid1 array.
Installing mdadm you get the error:
update-initramfs: Generating /boot/initrd.img-5.4.180
W: mkconf: MD subsystem is not loaded, thus I cannot scan for arrays.
W: mdadm: failed to auto-generate temporary mdadm.conf file.
When then trying to mount an array you get:
root@Khadas:~# mdadm --assemble -s
mdadm: unexpected failure opening /dev/md127
mdadm: No arrays found in config file or automatically
When trying to force mount an array you get:
root@Khadas:~# mdadm --assemble -sfR
mdadm: unexpected failure opening /dev/md127
mdadm: No arrays found in config file or automatically