Configuration file (not recommend to modify directly): /boot/grub2/grub.cf Second configuration file: # cat /etc/default/grub GRUB_TIMEOUT=3 GRUB_DISTRIBUTOR=”$(sed ‘s, release .*$,,g’ /etc/system-release)” GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT=”console” GRUB_CMDLINE_LINUX=”crashkernel=auto rd.lvm.lv=myvg1/root

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