====== RunLevel 1 ======
===== Overview =====


[[https://wiki.debian.org/RunLevel | Debian Doku for RunLevel]]

Linux starts different services as different run levels.
Depending on the run level various services become available:

  * RunLevel 1: Single-user mode. Most basic mode. Only text console available.
  * RunLevel 2: Multi-user mode. You can use different users.
  * RunLevel 3: Networking is available.
  * RunLevel 4: Reserved.
  * RunLevel 5: Starts the GUI. This is the normal RunLevel.


===== Change Run Level at Boot Time =====
This will change the RunLevel only for one startup.
  - Reboot
  - In the GRUB menue press 'e' to edit the boot configuration
  - Add a single '1' (for RunLevel 1) to the end of the line, which starts with ''linux''<code>linux	/vmlinuz-3.5.0-54-generic root=/dev/mapper/faramir-root ro 1</code>
  - Press ''F10'' to boot

===== Change Run Level at Run Time =====
This does not work on all Systems.
Ubuntu does not seem to like this method.
But it works on more basic system such as the Beagle Bone.

  - ''sudo init 1''

Switch back to graphical mode

  - ''sudo init 5''