Blank screen after installkernel

[beaute]

Hello,

I was trying to install ezjail. The first step is to update the host system and for that I was following a guide on cyberciti.biz

Everything ran smoothly up until the end of the base system build. The last step of that phase is to reboot, so I executed the reboot command and nothing happens. I mean yes the machine reboots but nothing comes up. I have a black screen with a blinking cursor marker and I cannot type anything.

What went wrong? How do I fix this?

Also, have I lost my existing files and configurations?