bdisk/docs/manual/user/advanced/AUTOLOGIN.adoc

Automatic Login (TTY)

If you don’t want to have to log into the TTY on boot, BDisk can automatically log in for you with a given username.

If, for example, you want a terminal to auto-login on TTY1 with the root user, you would create the following file at <basedir>/overlay/etc/systemd/system/getty@tty1.service.d/autologin.conf:

[Service]
Type=idle
ExecStart=
ExecStart=-/usr/bin/agetty --autologin root --noclear %I 38400 linux