Well, this is geuinaly not so helpful if you also lost your data encryption password.
break in
we gonna use bash as init… by modifing the kernel cmd line.
press ‘e’ key on desired Linux boot entry in grub or systemd-bootd, and overwrite correspond params with these:
rw init=/bin/bash console=ttyS0 earlyprintk=ttyS0and boot.
and jumped in to a root shell.
and you can run passwd as much as you like it.