File: //etc/sysconfig/grub
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="consoleblank=0 crashkernel=1G-4G:192M,4G-64G:256M,64G-:512M resume=UUID=75406dfa-3620-4bd7-9649-5752b22e366d rd.md.uuid=cb06a11a:e7bc5fd0:18aaba30:c7602196 rd.md.uuid=16c7e06b:26ac156a:d445c1df:47a4845c nomodeset biosdevname=0 net.ifnames=0 rhgb quiet selinux=0"
GRUB_DISABLE_RECOVERY="true"
GRUB_ENABLE_BLSCFG=true