deleting first user from Ubuntu install

Question

I noticed that the username I used to install Ubuntu got added to a bunch of groups in the /etc/group file. I'm getting rid of unneeded accounts. Would anything break if I removed that first account?

Answer 1

A user needs to be in the audio group to use the sound card, as one example. It would make more sense to edit the group file with a text editor, and put your main user in every group the original user was in.

Answer 2

If you've enabled logging in as root then no. Otherwise you will need at least one user in the admin group so that you have an account able to become root.