/usr/bin/systemd-sysinstall

> systemd-sysinstall [OPTION…] [DEVICE]

Install the OS to another block device.

Options:
  -h --help                    Show this help
     --version                 Show package version
     --welcome=no              Disable the welcome text
     --erase=BOOL              Whether to erase the target disk
     --confirm=no              Disable query for confirmation
     --summary=no              Disable summary before beginning operation
     --definitions=DIR         Find partition definitions in specified directory
     --reboot=BOOL             Whether to reboot after installation is complete
     --variables=BOOL          Whether to modify EFI variables
     --kernel=IMAGE            Explicitly pick kernel image to install
     --set-credential=ID:VALUE Install a credential with literal value to target system
     --load-credential=ID:PATH Load a credential to install to new system from file or AF_UNIX
                               stream socket
     --copy-locale=no          Don't copy current locale to target system
     --copy-keymap=no          Don't copy current keymap to target system
     --copy-timezone=no        Don't copy current timezone to target system
     --chrome=no               Whether to show a color bar at top and bottom of terminal
     --mute-console=BOOL       Whether to disallow kernel/PID 1 writes to the console while running

See the systemd-sysinstall(8) man page for details.