Remove boot message https://raspberrypi.stackexchange.com/questions/59310/remove-boot-messages-all-text-in-jessie sudo nano /boot/cmdline.txtquiet splash loglevel=0 logo.nologo vt.global_cursor_default=0sudo nano /etc/rc.local#Suppress Kernel Messages dmesg --console-off 부팅 속도 확인 https://www.raspberrypi.org/forums/viewtopic.php?t=195777 $ systemd-analyze Startup finished in 1.653s (kernel) + 1mi..