26.3. Booting into Single-User Mode
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.
