Linux system setup and recovery
booting single user mode directly
2–14
You may be able to boot single-user mode directly. If your system
boots, but does not allow you to login when it has completed booting,
try rebooting and specifying one of these options at the LILO boot
prompt:
LILO boot: linux single
LILO boot: linux emergency
In single-user mode, you computer boots to runlevel 1. Your local
filesystems will be mounted but your network will not be activated.
You get a usable system maintenance shell.
In emergency mode, you are booted into the most minimal
environment possible. The root filesystem will be mounted read-only
and almost nothing will be set up. The main advantage of this over
Linux single user is that your init files are not loaded. If init is
corrupted or not working, you can still mount filesystems to recover
data that could be lost during a re-installation.
getting started guide