How To Boot Into Single User Mode On CentOS

by lifeLinux on January 13, 2013

Single user mode, also referred to as maintenance mode and runlevel 1, is a way of running Linux or another Unix-like operating system that uses minimal system resources and provides only minimal functionality.

There are several ways to change into single user mode.

The computer is already in operation

It is easiest to do while the computer is already in operation. All that is necessary is for the root user to run the init command, which is used to change the runlevel, using the number the letter s or the number 1 as an option as follows:

# /sbin/init 1

Boot directly into single user mode

Step 1: The GRUB splash screen to appear (After restart) – Press the p key
Single User Mode
Step 2: Select the kernel
Step 3: Press the e key to edit the entry
Step 4: Select the line that starts with the word kernel
Single User Mode
Step 5: Step 3: Press the e key to edit the entry
Single User Mode
Step 6: Append the letter S (or word Single) to the end of the line
Step 7: Press ENTER key
Step 8: Now press the b key to boot the Linux kernel into single user mode

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Peter Popoff Address September 6, 2013 at 9:18 am

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