Dear all,
I’m trying to install DietPi on an ASUS-Tinker board.
A 16GB card is loaded with BalenaEtcher an the
DietPi_ASUSTB-ARMv7-Bullseye.img
The ASUS board boots (screen and keyboard) -
The login-Scrren appears :
DietPi v6.33.3 : Update available
hit return to login …
but the combination
root + dietpi
dietpi + dietpi
does not work
I’ve already tried to mount the card under Ubuntu and edit
/boot/dietpi.txt on the SD card and assign a different password.
The changed password does not work either.
what is going wrong here? Does somebody has any idea ?
thx in advance
mike
I remember cases that the sd card was not properly erased and the old contents were still in the /etc/shadow . After the sd was fully erased and the image was written the default password worked.
Thanks for your advice.
Unfortunately without success.
1.) I formatted the card and flashed it again with Etcher…
2.) and used new SD-Card (
same error in both cases when restarting…
I tried all combinations with
User : root, pi, dietpi
Pwd. : root, dietpi, raspberry
on the console and via SSH
… without success
There is no user pi on DietPi. The default password for user root as well as user dietpi is always dietpi. Except, if you set something in /boot/dietpi.txt.
of courese - I know, but in my desperation I tried everything 
One option is to mount and chroot the sdcard on another system, then change the pass.
Other option is to change it in shadow directly. https://unix.stackexchange.com/questions/76313/change-password-of-a-user-in-etc-shadow
Did you tried connecting via SSH or local console?
SOLVED
Dear all Thx for your ideas & support.
But the solution was much easier … (or not)
I’m almost afraid to say what caused the problem…
The thing is, the tinker board has its own emmc memory
and another OS was already flashed on this one
but I didn’t know that! 
and while I was trying to enter the default password (because I thought I was booting the new OS from the SD card)
the system was booted into the existing OS with the password already changed …
So Thank you for your support … BR Mike