root reset
First off, you need to have TuxBox commander. You can download it via the Blue Panel then ADDONS. Just select the Gemini Server and, when it's downloaded the catalogue, select PLUGINS and download Tuxbox Commander.
Once thats installed you can access it through Blue Panel, PLUGINS (Tools).
Fire it up and navigate to var/etc
Select the passwd file. Hit 4 to edit it.
You'll see something like this:
root:$1$$3er43323sBBCAw.ofBbt.:0:0::/:/bin/sh
sshd:*:65532:65534::/:/bin/false
ftp:*:65533:65534::/:/bin/false
nobody:*:65534:65534::/:/bin/false
Your root password will obviously be different to the above. What you need to do is replace the first line with this:
root:$1$$34NPeumc9sBBCAw.oUaM80:0:0::/:/bin/sh
And you have to be *exact*.
That resets the password to "dreambox" (without the quotes - password is now dreambox) and you're good to go.