Root password restored accepted with exception

[AngeloU]

Tried to reset Root password by Edit mode (on booting as described below: )

https://www.bing.com/videos/search?q=ho ... &FORM=VIRE

Root password changed successfully .

The new root password is accepted on Synaptic Package Manager ( I insert password per root).

On terminal the same password is incorrect.

angelo@debian-10:~$ sudo apt-get update
[sudo] password di angelo:
Riprovare. (try again)
[sudo] password di angelo:
Riprovare.
[sudo] password di angelo:
sudo: 3 tentativi di immissione password non corretti (3 wrong attempts to log in with password)
angelo@debian-10:~$

Thanks everybody

[Head_on_a_Stick]

Sudo requires the user's password rather than the root password.

[AngeloU]

If I insert my user password (is it the password required at Debian desktop, after booting ? )

angelo@debian-10:~$ sudo apt-get update
[sudo] password di angelo: (after some failed attempts):

angelo non è nel file sudoers. Questo evento verrà segnalato.
(angelo is not in file sudoers. This event will be reported)

By means of groups:

angelo@debian-10:~$ groups
angelo cdrom floppy audio dip video plugdev netdev lpadmin scanner

[Head_on_a_Stick]

You need to add your user to the sudo group. Read the sudo page in the Debian wiki.