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33.2. Single-User Mode
Single-user mode provides a Linux environment for a single user that allows you to recover your system from problems that cannot be resolved in networked multi-user environment. You do not need an external boot device to be able to boot into single-user mode, and you can switch into it directly while the system is running. To switch into single-user mode on the running system, issue the following command from the command line:
~]# init 1
In
single-user mode, the system boots with your local file systems mounted, many important services running, and a usable maintenance shell that allows you to perform many of the usual system commands. Therefore, single-user mode is mostly useful for resolving problems when the system boots but does not function properly or you cannot log into it.
Warning
The
single-user mode automatically tries to mount your local file systems. Booting to single-user mode could result in loss of data if any of your local file systems cannot be successfully mounted.
To boot into
single-user mode follow this procedure:
Procedure 33.2. Booting into Single-User Mode
- At the GRUB boot screen, press any key to enter the GRUB interactive menu.
- Select Red Hat Enterprise Linux with the version of the kernel that you want to boot and press the a to append the line.
- Type
singleas a separate word at the end of the line and press Enter to exit GRUB edit mode. Alternatively, you can type1instead of single.
