[Debian]报错：su: Authentication failure

Project scenario:

        Today I re-flashed a debian system.

system version:

# 查看系统版本
lsb_release -a

My system version:

No LSB modules are available.

Distributor ID：Debian

Description: Debian GNU/Linux 12 （bookworm）

Release：12

Codename：bookworm

---

Problem Description

        ​ ​ An error is reported when using su to enter the root system.

        su: Authentication failure

---

solution:

sudo passwd root

        Enter the above command, then enter your password, and then you can enter root.

---

The sun always comes after the storm