My Mac had a kernel security level of 0. Then, I changed the kernel security level to 1.
Here's how I changed it to 1:
I'd like to change it back to 0 becuase my hosts file has a system immutable flag on it.
This is the code for that-
sudo chflags schg /etc/hosts
I'd like to take away the system immutable flag, and that starts with changing the secure level back to 0.
I've tried to boot into single user mode. I shut down my computer and then held down cmd+S when I rebooted. It shows a black screen and white code scrolling across the screen and then went into the regular user selection field. Then, I put in my password to log in and it showed more white code scrolling across the screen and then it logged me in and everything appears normal.
This is related to this