Can't locate /etc/nas/service_startup/ssh on MBL

WD Legacy Products My Book Live
2

It’ll be under the 3rd partition.  I would change the same under the 4th partition.  Make the same changes!

The 3rd and 4th partitions are part of a RAID1 array.  Maybe better to get ubuntu to mount those two partitions as a RAID1 array and then make the change.  I don’t know how to do this sort of mount.