One of the advantages of single-user mode is that you do not
need a boot CD-ROM; however, it does not give you the option to
mount the file systems as read-only or not mount them at all.
If your system boots, but does not allow you to log in when it
has completed booting, try single-user mode.
In single-user mode, your computer boots to runlevel 1. Your
local file systems are mounted, but your network is not activated.
You have a usable system maintenance shell. Unlike rescue mode,
single-user mode automatically tries to mount your file system.
Do not use single-user mode if your file system
cannot be mounted successfully. You cannot use single-user mode
if the runlevel 1 configuration on your system is corrupted.
On an x86 system using GRUB, use the following steps to boot
into single-user mode:
-
At the GRUB splash screen at boot time, press any key to enter
the GRUB interactive menu.
-
Select Red Hat Enterprise Linux with the
version of the kernel that you wish to boot and type a to append the line.
-
Go to the end of the line and type single as a separate word (press the [Spacebar] and then type single). Press [Enter] to exit edit mode.
