GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL="serial console"
GRUB_SERIAL_COMMAND="serial --speed=115200"
GRUB_CMDLINE_LINUX="console=ttyS0,115200n8 console=ttyS1 biosdevname=0 crashkernel=auto selinux=0 console=ttyS0,1152000 console=tty1 rd.retry=5 rd.shell=0 rd.emergency=reboot"
GRUB_DISABLE_RECOVERY="true"
GRUB_ENABLE_BLSCFG=true
All system for education purposes only. For more tools: Telegram @jackleet