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Baa
Asked: 2020-01-13 05:50:03 +0800 CST

What is the root login during installation?

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I need to troubleshoot my installation failure. From the installer I can access the terminal using ALT + F2 but I still need user credentials.

Is there a default root login I can use during the installation? I'm installing a custom ISO based on Ubuntu 19.10

So far I've tried:

  • Username: root
  • Password: root
  • Username: ubuntu
  • Password: ubuntu
  • Username: root
  • Password: ubuntu
  • Username: root
  • Password:
  • Username: ubuntu
  • Password:
system-installation ubiquity root

1 Answers

  1. Best Answer

    A close reading of the question reveals that a customized disk, and not an original Ubuntu disk was in use. Perhaps the reason the "ubuntu" login didn't work was because it was changed during customization (whether purposefully or inadvertently). More than likely the actual details would have to come from the entity that produced the customized install media.

    Regardless, for most cases of a question like this FedonKadifeli's suggested reference to Live CD asks for a username and password was good for 20.04.1 so unless 19.10 did something different, it should provide a satisfactory answer. I referenced this answer, but another answer provides alternate usernames for various editions of Ubuntu.

    It is possible to confirm during an Ubuntu 20.04.1 Desktop installation, while the installer is running, one may access an alternate virtual console with CTRL+ALT+Fn and login with username "ubuntu" and a null password.

    Ubuntu 20.04.1 LTS ubuntu tty2

ubuntu login: ubuntu
Welcome to Ubuntu 20.04.01 LTS (GNU/Linux 5.4.0-42-generic x86_64)

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 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage


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individual files in /usr/share/doc/*/copyright.

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applicable law.

ubuntu@ubuntu:~$ ps -ef | grep install
ubuntu      1849    1566  0 20:19 pts/0    00:00:00 /bin/busybox tail -f /var/log/installer/debug -f /var/log/syslog -q
...

    A couple answers seem to indicate failures to get these logins work, but they have comments that either directly, or indirectly, dispute that they do not generally work.

    As indicated by others, the login account does not have elevated (superuser) permissions, but sudo without a password is possible.

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