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user3546849
Asked: 2014-07-20 13:09:24 +0800 CST

Where is the configuration that instructs linux 14.04 to enter single user mode?

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I have an EC2 Instance of Ubuntu 14.04 Fails to restart after stop/restart. It was upgraded from 13.x and apparently AWS has the web ui setup to send a 'reboot now' command which instructs 14.04 to enter into this modified boot.

I can dismount the drive, remount it to another instance and manually reset the single user flag if I could only figure out where that setting lives. Thanks in advance.

linux

2 Answers

  1. You can use the shutdown command to drop it into the init level you want. From the command line, issue "shutdown -h now -i 1". Replace the "1" with whatever init level you'd like. 1 is single user mode, 6 is reboot, etc.

    Or, you can create an /etc/inittab file with id:S:initdefault: in it and reboot. Ubuntu uses Upstart, not sysinit, but it'll parse the file just the same (/etc/init/rc-sysinit.conf tells it to look and see if one exists, just in case).

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  2. After booting up the system, select the boot option you want in grub and press 'e'. Then type "Single" and hit enter.

    Point of interest, however: Ubuntu 14.04 is not Linux 14.04, it's Linux 3.13.0.

    edit to respond to comment: alright, I thought your system wasn't booting at all, just type init 1 if you need to go from multiuser to single user mode. The config file you're looking for is in /boot/grub/grub.cfg.

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