change to root - bash on windows

#root password isn't set up yet

user@pc:/mnt/c/Windows/System32$ su - root
Password:
su: Authentication failure

..

#setup a root password

user@pc:/mnt/c/Windows/System32$ sudo passwd root
user: unable to resolve host pc
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully

..

#login as root
user@pc:/mnt/c/Windows/System32$ su - root
Password:

root@pc:~#

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