passwords for first installation

Hi folks.

I’ve just installed dolibarr on my debian machine. But I changed the password for dolibarrdebian
and I thought ti know the password for root.

But the installationprocess say wrong passwords.

Where can I look to find my rootpassword, although i thought to know it.

And what ist the standard user-password for dolibarrdebian, cause I didn’t checked it out before
hidding the button to go to the next step.