I installed version 9.0 "Stretch" looking with the repositories to testing, I am almost sure that updated to version 10.0 "Buster".
I performed a cleanup of the system with the instructions "autoclean, clean, revome, autoremove", and it seems that I uninstalled all the kernel.
When I rebooted I could not enter the Grub anymore, I just got some instructions that asked for my password, but when I entered it nothing happened.