Ubuntu won't let me enter my root password

debugcn Published at Dev

Micah Gray

When I was installing a program, it said that I needed to run it as a normal account rather than an administrator account, and so, being the inexperienced person that I am, changed my account to Standard rather than Administrator.

When I went to change it back, I clicked unlock, and entered my password (the only password I have ever used for this computer), and it said that my authentication attempt was unsuccessful.

I've tried changing my password in the recovery mode before booting, and it still doesn't work. I can't install any programs without being admin.

MadMike

How to recover admin rights

Lifted from this post.

First you need to boot into recovery mode. If Ubuntu is the only system installed on your computer you need to hold Shift-Key while booting.

The recovery-mode entry on a single OS system

Select the "recovery mode"-entry which is usually the second one.

The menu from the recovery mode

Select "root Drop to root shell prompt".
Enter mount -o rw,remount / to make your system writeable

Repairing

Enter the following (replacing your-username with your actual username):

adduser your-username sudo
adduser your-username admin

Now your user will have his admin rights back. Enter

reboot

to reboot your system.

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edited at2021-06-20

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