fixes unneeded console messages (mostly for first boot):
[FAILED] Failed to start Create Static Device Nodes in /dev.
See 'systemctl status systemd-tmpfiles-setup-dev.service' for details.
[ OK ] Reached target Local File Systems (Pre).
[ OK ] Mounted Debug File System.
[ OK ] Mounted POSIX Message Queue File System.
[ OK ] Mounted Variable Directory.
[ OK ] Mounted Temporary Directory.
[ OK ] Started Setup machine-id.
[ OK Starting Journal Service...
[ OK ] Reached target Local File Systems.
Starting Setup Timezone data...
[ OK ] Started Setup Timezone data.