GRUB_TIMEOUT=1 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL="serial console" GRUB_SERIAL_COMMAND="serial" GRUB_DISABLE_RECOVERY="true" GRUB_DISABLE_LINUX_UUID="false" GRUB_TERMINAL_OUTPUT="" GRUB_ENABLE_BLSCFG=false GRUB_CMDLINE_LINUX="rd.auto crashkernel=auto vga=normal nomodeset rdloaddriver=raid1 console=tty0 console=ttyS0,115200n8" GRUB_PRELOAD_MODULES="diskfilter mdraid1x"