Installation guide

If you have tasks you need to accomplish and you want the system
to restrict access to all users but root, plan to boot to single-user
mode.
If you do not require single-user access and you want the system to
initialize full functionality, plan to boot to one of the multiuser
modes: multiuser without networking or multiuser with
networking.
2. Enter the boot command that corresponds to the desired startup mode.
Refer to Section 3.3 for the commands and procedures required to boot
your system.
3.2.3 Preparing to Transition from Single-User Mode
When your machine is powered up and enabled, the processor is running,
and access is limited to root, the system is in single-user mode.
When the system displays the single-user prompt (#), follow these steps to
prepare to go to multiuser mode:
1. Decide if you should continue in single-user mode or if you should go to
multiuser mode:
If you have additional tasks that you need to perform and you
want the system to deny access to all users but root, plan to
continue in single-user mode.
If you do not require single-user access, or if you have completed
your tasks and you want the system to initialize full functionality,
plan to go to one of the multiuser modes: multiuser without
networking or multiuser with networking.
2. When you are ready to go to multiuser mode, press Ctrl/d. Refer to
Section 3.3 for the commands and procedures required to boot your
system.
3.2.4 Preparing to Boot a Crashed System
If your system crashes and is unable to recover automatically and reboot
itself, follow these steps to prepare to boot the system:
1. Confirm that the hardware and all peripheral devices are connected.
2. Power up the hardware, if necessary. Always power up peripherals and
devices before the processor.
3. Monitor the hardware restart and diagnostic operations. Refer to the
operator’s guide for your hardware for information and instructions for
interpreting diagnostic output.
Starting Up and Shutting Down the System 3–5