When ostree-prepare-root is pid 1, ostree-prepare-boot defers creation of /run/ostree-booted, which happens in ostree-remount, but that's too late if we need ostree-system-generator to bind /var. Add the creation of the /run/ostree-booted marker to ostree-system-generator based on the existence of the ostree= kernel command line argument (which matches the condition that ostree-remount uses). Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com> Closes: #1675 Approved by: cgwalters