Ubintu: reset root password

Boot up the machine, and after the BIOS screen, hold down the left Shift key. You will then be prompted by a menu. (Sometimes you have to choose ADVANCED mode)

From next menu select the one with the recovery mode in the description

From Recovery Menu choose Root - Grop a root shell menu

You should now see a root prompt, something like this:

root@ubuntu:~#

At this stage you should have a read-only filesystem. You have to remount it with write permissions:

mount -rw -o remount /

Now we can set the user's password with the passwd command. (In this example I will use jorge as the example, you need to substitute whatever the user's username is):

root@ubuntu:~# passwd jorge
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully
root@ubuntu:~#

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