I am confused, at message
https://forum.obarun.org/viewtopic.php?pid=3969# p3969 item 13 you say you tried the quick installation which just copies an identical system into the mounted partition.
That system should have oblive as the only user and password toor
When was manyroads created? If manyroads doesn't exist the passwd manyroads will produce an error
# passwd manyroads
passwd: user 'manyroads' does not exist