bin  dev  etc  init  l1  l2  mnt  proc	root  sbin  sys

./bin:
busybox  sh

./dev:
console  null  random  urandom	zero

./etc:

./mnt:
key  root

./mnt/key:

./mnt/root:

./proc:

./root:

./sbin:
btrfs  cryptsetup

./sys: