GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=2 GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="crashkernel=1G-64G:448M,64G-:512M rd.lvm.lv=ol/root rhgb quiet numa=off transparent_hugepage=never" GRUB_DISABLE_RECOVERY="true" GRUB_ENABLE_BLSCFG=true