Editing Runlevel (section)

=== System V Releases 3 and 4 ===
{| class="wikitable"
|+[[System V]] runlevels
|-
!ID
!Description
|-
|'''0'''
|Off
|-
|'''1'''
|Single-user mode, all filesystems unmounted but not root, all processes except console processes killed
|-
|'''2'''
|Multi-user mode
|-
|'''3'''
|Multi-user mode with [[Remote File System|RFS]] (and [[Network File System (protocol)|NFS]] in Release 4) filesystems exported
|-
|'''4'''
|Multi-user, User-definable
|-
|'''5'''
|Go to firmware
|-
|'''6'''
|Reboot
|-
|'''s''', '''S'''
|Identical to '''1''', except current terminal acts as the system console
|}