Installing UC20 in Virtuabox triggers invalid signature after ubuntu-boot not found

Hi,

I got that thing sorted out. Instead, I have a question about UC20 itself.

I mounted a custom image manually to check which partitions has (never booted that image), but for my surprise, it only mounts two partitons, and there is no sign of /writtable.

After that, I booted the image in a Virtual Machine and after the configuration and successful ssh, it does have /writtable. Does that mean that unless you configure a user with a SSO, the image does not create the /writtable partition? I want to skip the console-conf, so I tried to create a file just as it says here. Isn’t that possible anymore (–disable console-conf is deprecated in uc20) and I’m forced to create a custum gadget to skip console-conf?

Thanks