Novell LINUX ENTERPRISE SERVER 10 - INSTALLATION AND ADMINISTRATION 08-05-2008 Installation Manual page 410

the line initdefault. Usually this is 3 or 5. See
(page 392). As an alternative, the runlevel can be specified at boot time (by adding the
runlevel number at the boot prompt, for instance). Any parameters that are not directly
evaluated by the kernel itself are passed to init. To boot into runlevel 3, just add the
single number 3 to the boot prompt.
Table 20.1
Runlevel
0
S or 1
2
3
4
5
6
IMPORTANT: Avoid Runlevel 2 with a Partition Mounted via NFS
You should not use runlevel 2 if your system mounts a partition like /usr via
NFS. The system might behave unexpectedly if program files or libraries are
missing because the NFS service is not available in runlevel 2 (local multiuser
mode without remote network).
To change runlevels while the system is running, enter telinit and the corresponding
number as an argument. Only the system administrator is allowed to do this. The fol-
lowing list summarizes the most important commands in the runlevel area.
telinit 1 or shutdown now
The system changes to single user mode. This mode is used for system maintenance
and administration tasks.
392 Installation and Administration
Available Runlevels
Description
System halt
Single user mode
Local multiuser mode without remote network (NFS, etc.)
Full multiuser mode with network
Not used
Full multiuser mode with network and X display manag-
er—KDM, GDM, or XDM
System reboot
Table 20.1, "Available Runlevels"