File systems required for multi-user operations will be mounted at the end of rc1.
When the system comes up from firmware mode into state 1, only the console is active; multi-user (state 2) services are unavailable. When the system is going from state 2 to state 1, some services are stopped and some processes are killed; otherwise, the system continues operating as it did in state 2.
Note that in this state, logins requiring access to multi-user filesystems can be used, but other multi-user services are unavailable.